CVE-2021-4185
Infinite loop in the RTMPT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of...
Infinite loop in the RTMPT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
7.5
Infinite loop in the RTMPT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file
- Record
CVE-2021-4185- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
EUVDEUVD-2021-34045
7.5
Infinite loop in the RTMPT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file
- Record
EUVD-2021-34045- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-wm4g-hw88-g25h
7.5
Infinite loop in the RTMPT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of...
Infinite loop in the RTMPT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file
- Record
GHSA-wm4g-hw88-g25h- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-835
- Updated
- 2026-11-02
NVD
7.5
Infinite loop in the RTMPT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file
- Record
CVE-2021-4185- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-835
- Updated
- 2026-11-02
OSVALPINE-CVE-2021-4185
7.5
Infinite loop in the RTMPT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file
- Record
ALPINE-CVE-2021-4185- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-03
OSVAZL-7420
7.5
CVE-2021-4185 affecting package wireshark for versions less than 3.4.14-1
Infinite loop in the RTMPT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file
- Record
AZL-7420- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Show 10 moreShow less
OSV
7.5
Infinite loop in the RTMPT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file
- Record
CVE-2021-4185- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2021-4185
7.5
Infinite loop in the RTMPT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file
- Record
DEBIAN-CVE-2021-4185- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVOESA-2022-1610
8.8
wireshark security update
Wireshark allows you to examine protocol data stored in files or as it is captured from wired or wireless (WiFi or Bluetooth) networks, USB devices, and many other sources. It supports dozens of protocol capture file formats and understands more than a thousand protocols.
Security Fix(es):
Excessive memory consumption in MS-WSP dissector in Wireshark 3.4.0 to 3.4.4 and 3.2.0 to 3.2.12 allows denial of service via packet injection or crafted capture file(CVE-2021-22207)
Improper URL handling in Wireshark 3.4.0 to 3.4.3 and 3.2.0 to 3.2.11 could allow remote code execution via via packet injection or crafted capture file.(CVE-2021-22191)
Crash in the Sysdig Event dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file(CVE-2021-4181)
Infinite loop in the RTMPT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file(CVE-2021-4185)
- Record
OESA-2022-1610- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2021-4185
7.5
Infinite loop in the RTMPT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file
- Record
UBUNTU-CVE-2021-4185- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVCLSA-2026-1777312619 No score
wireshark: Fix of CVE-2021-4185
- CVE-2021-4185: fix infinite loop in RTMPT dissector on TCP sequence wraparound
- Record
CLSA-2026-1777312619- Updated
- 2026-11-02
OSVMGASA-2022-0004 No score
Updated wireshark packages fix security vulnerability
Several wireshark vulnerabilities have been fixed. See the release notes for details.
- Record
MGASA-2022-0004- Updated
- 2026-11-02
OSVopenSUSE-SU-2022:0375-1 No score
Security update for wireshark
This update for wireshark fixes the following issues:
Update to version 3.6.1:
- CVE-2021-4185: RTMPT dissector infinite loop (bsc#1194166)
- CVE-2021-4184: BitTorrent DHT dissector infinite loop (bsc#1194167)
- CVE-2021-4183: pcapng file parser crash (bsc#1194168)
- CVE-2021-4182: RFC 7468 file parser infinite loop (bsc#1194169)
- CVE-2021-4181: Sysdig Event dissector crash (bsc#1194170)
- CVE-2021-4190: Kafka dissector infinite loop (bsc#1194171)
- Support for Shared Memory Communications (SMC) (jsc#SLE-18727)
- Record
openSUSE-SU-2022:0375-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:11703-1 No score
libwireshark15-3.6.1-1.1 on GA media
These are all security issues fixed in the libwireshark15-3.6.1-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:11703-1- Updated
- 2026-11-02
OSVSUSE-SU-2022:0375-1 No score
Security update for wireshark
This update for wireshark fixes the following issues:
Update to version 3.6.1:
- CVE-2021-4185: RTMPT dissector infinite loop (bsc#1194166)
- CVE-2021-4184: BitTorrent DHT dissector infinite loop (bsc#1194167)
- CVE-2021-4183: pcapng file parser crash (bsc#1194168)
- CVE-2021-4182: RFC 7468 file parser infinite loop (bsc#1194169)
- CVE-2021-4181: Sysdig Event dissector crash (bsc#1194170)
- CVE-2021-4190: Kafka dissector infinite loop (bsc#1194171)
- Support for Shared Memory Communications (SMC) (jsc#SLE-18727)
- Record
SUSE-SU-2022:0375-1- Updated
- 2026-11-02
OSVUSN-7552-1 No score
wireshark vulnerabilities
It was discovered that Wireshark did not correctly handle recursion. If a user or system were tricked into opening a specially crafted file, an attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2021-39929)
Roman Donchenko discovered that Wireshark did not correctly handle parsing certain files. If a user or system were tricked into opening a specially crafted file, an attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 20.04 LTS. (CVE-2021-4182)
It was discovered that Wireshark did not correctly handle parsing certain files. If a user or system were tricked into opening a specially crafted file, an attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2021-4185, CVE-2022-0581)
It was discovered that Wireshark did not correctly handle parsing certain files. If a user or system were tricked into opening a specially crafted file, an attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 20.04 LTS. (CVE-2021-4186)
Sharon Brizinov discovered that Wireshark did not correctly handle parsing certain files. If a user or system were tricked into opening a specially crafted file, an attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2022-0582, CVE-2022-0583, CVE-2022-0586)
Sharon Brizinov discovered that Wireshark did not correctly handle parsing certain files. If a user or system were tricked into opening a specially crafted file, an attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 20.04 LTS. (CVE-2022-0585)
Jason Cohen discovered that Wireshark did not correctly handle parsing certain files. If a user or system were tricked into opening a specially crafted file, an attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 22.04 LTS. (CVE-2022-3190)
- Record
USN-7552-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
wiresharkAlpine:v3.15 |
3.4.0 up to 3.4.13-r0 | 3.4.13-r0 |
wiresharkAlpine:v3.16 |
3.4.0 up to 3.4.11-r0 | 3.4.11-r0 |
wiresharkAlpine:v3.17 |
3.4.0 up to 3.4.11-r0 | 3.4.11-r0 |
wiresharkAlpine:v3.18 |
3.4.0 up to 3.4.11-r0 | 3.4.11-r0 |
wiresharkAlpine:v3.19 |
3.4.0 up to 3.4.11-r0 | 3.4.11-r0 |
wiresharkAlpine:v3.20 |
3.4.0 up to 3.4.11-r0 | 3.4.11-r0 |
wiresharkAlpine:v3.21 |
3.4.0 up to 3.4.11-r0 | 3.4.11-r0 |
wiresharkAlpine:v3.22 |
3.4.0 up to 3.4.11-r0 | 3.4.11-r0 |
wiresharkAlpine:v3.23 |
3.4.0 up to 3.4.11-r0 | 3.4.11-r0 |
wiresharkAlpine:v3.24 |
3.4.0 up to 3.4.11-r0 | 3.4.11-r0 |
Show 48 moreShow less
| Package | Affected | Fixed |
|---|---|---|
wiresharkAzure Linux:2 |
before 3.4.14-1 | 3.4.14-1 |
wiresharkTuxCare:AlmaLinux:9.2 |
before 1:3.4.10-4.el9.tuxcare.els6 | 1:3.4.10-4.el9.tuxcare.els6 |
wireshark-cliTuxCare:AlmaLinux:9.2 |
before 1:3.4.10-4.el9.tuxcare.els6 | 1:3.4.10-4.el9.tuxcare.els6 |
wireshark-develTuxCare:AlmaLinux:9.2 |
before 1:3.4.10-4.el9.tuxcare.els6 | 1:3.4.10-4.el9.tuxcare.els6 |
wiresharkDebian:12 |
before 3.6.2-1 | 3.6.2-1 |
wiresharkDebian:13 |
before 3.6.2-1 | 3.6.2-1 |
wiresharkDebian:14 |
before 3.6.2-1 | 3.6.2-1 |
wiresharkDebian:9 From an advisory covering 9 CVEs |
before 2.6.20-0+deb9u3, plus listed versions 2.2.6+g32dac6a-22.2.6+g32dac6a-2+deb9u12.2.6+g32dac6a-2+deb9u22.2.6+g32dac6a-2+deb9u32.2.7-1 Show 26 moreShow less2.4.0-12.4.1-12.4.2-12.4.3-12.4.4-12.4.5-12.4.6-12.6.1-12.6.10-12.6.2-12.6.2-22.6.20-0+deb9u12.6.20-0+deb9u22.6.3-12.6.3-1~deb9u12.6.4-12.6.4-22.6.5-12.6.5-1~deb9u12.6.6-12.6.7-12.6.7-1~deb9u12.6.8-12.6.8-1.12.6.8-1.1~deb9u12.6.9-1 |
2.6.20-0+deb9u3 |
wiresharkDebian:11 From an advisory covering 47 CVEs |
before 3.4.16-0+deb11u1, plus listed versions 3.4.10-0+deb11u13.4.4-13.4.6-1~exp13.4.7-13.4.7-1~exp13.4.8-13.4.9-1 |
3.4.16-0+deb11u1 |
wiresharkMageia:8 From an advisory covering 5 CVEs |
before 3.4.11-1.mga8 | 3.4.11-1.mga8 |
wiresharkopenEuler:20.03-LTS-SP1 From an advisory covering 4 CVEs |
before 2.6.2-21.oe1 | 2.6.2-21.oe1 |
wiresharkopenEuler:20.03-LTS-SP2 From an advisory covering 4 CVEs |
before 2.6.2-21.oe1 | 2.6.2-21.oe1 |
wiresharkopenEuler:20.03-LTS-SP3 From an advisory covering 4 CVEs |
before 2.6.2-21.oe1 | 2.6.2-21.oe1 |
libvirtSUSE:Linux Enterprise Module for Basesystem 15 SP3 From an advisory covering 6 CVEs |
before 7.1.0-150300.6.23.1 | 7.1.0-150300.6.23.1 |
wiresharkSUSE:Linux Enterprise Module for Basesystem 15 SP3 From an advisory covering 6 CVEs |
before 3.6.1-3.68.1 | 3.6.1-3.68.1 |
wiresharkSUSE:Linux Enterprise Module for Desktop Applications 15 SP3 From an advisory covering 6 CVEs |
before 3.6.1-3.68.1 | 3.6.1-3.68.1 |
libvirtSUSE:Linux Enterprise Module for Server Applications 15 SP3 From an advisory covering 6 CVEs |
before 7.1.0-150300.6.23.1 | 7.1.0-150300.6.23.1 |
wiresharkSUSE:Linux Enterprise High Performance Computing 15-ESPOS From an advisory covering 6 CVEs |
before 3.6.1-3.68.1 | 3.6.1-3.68.1 |
wiresharkSUSE:Linux Enterprise High Performance Computing 15-LTSS From an advisory covering 6 CVEs |
before 3.6.1-3.68.1 | 3.6.1-3.68.1 |
wiresharkSUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOS From an advisory covering 6 CVEs |
before 3.6.1-3.68.1 | 3.6.1-3.68.1 |
wiresharkSUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS From an advisory covering 6 CVEs |
before 3.6.1-3.68.1 | 3.6.1-3.68.1 |
wiresharkSUSE:Linux Enterprise High Performance Computing 15 SP2-ESPOS From an advisory covering 6 CVEs |
before 3.6.1-3.68.1 | 3.6.1-3.68.1 |
wiresharkSUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS From an advisory covering 6 CVEs |
before 3.6.1-3.68.1 | 3.6.1-3.68.1 |
wiresharkSUSE:Linux Enterprise Server 15-LTSS From an advisory covering 6 CVEs |
before 3.6.1-3.68.1 | 3.6.1-3.68.1 |
wiresharkSUSE:Linux Enterprise Server 15 SP1-BCL From an advisory covering 6 CVEs |
before 3.6.1-3.68.1 | 3.6.1-3.68.1 |
wiresharkSUSE:Linux Enterprise Server 15 SP1-LTSS From an advisory covering 6 CVEs |
before 3.6.1-3.68.1 | 3.6.1-3.68.1 |
wiresharkSUSE:Linux Enterprise Server 15 SP2-BCL From an advisory covering 6 CVEs |
before 3.6.1-3.68.1 | 3.6.1-3.68.1 |
wiresharkSUSE:Linux Enterprise Server 15 SP2-LTSS From an advisory covering 6 CVEs |
before 3.6.1-3.68.1 | 3.6.1-3.68.1 |
wiresharkSUSE:Linux Enterprise Server for SAP Applications 15 From an advisory covering 6 CVEs |
before 3.6.1-3.68.1 | 3.6.1-3.68.1 |
wiresharkSUSE:Linux Enterprise Server for SAP Applications 15 SP1 From an advisory covering 6 CVEs |
before 3.6.1-3.68.1 | 3.6.1-3.68.1 |
wiresharkSUSE:Linux Enterprise Server for SAP Applications 15 SP2 From an advisory covering 6 CVEs |
before 3.6.1-3.68.1 | 3.6.1-3.68.1 |
wiresharkSUSE:Manager Proxy 4.1 From an advisory covering 6 CVEs |
before 3.6.1-3.68.1 | 3.6.1-3.68.1 |
wiresharkSUSE:Manager Retail Branch Server 4.1 From an advisory covering 6 CVEs |
before 3.6.1-3.68.1 | 3.6.1-3.68.1 |
wiresharkSUSE:Manager Server 4.1 From an advisory covering 6 CVEs |
before 3.6.1-3.68.1 | 3.6.1-3.68.1 |
libvirtSUSE:Linux Enterprise Micro 5.1 From an advisory covering 6 CVEs |
before 7.1.0-150300.6.23.1 | 7.1.0-150300.6.23.1 |
wiresharkSUSE:Enterprise Storage 6 From an advisory covering 6 CVEs |
before 3.6.1-3.68.1 | 3.6.1-3.68.1 |
wiresharkSUSE:Enterprise Storage 7 From an advisory covering 6 CVEs |
before 3.6.1-3.68.1 | 3.6.1-3.68.1 |
wiresharkUbuntu:Pro:14.04:LTS |
before 2.6.10-1~ubuntu14.04.0~esm3, plus listed versions 1.10.2-11.10.3-11.10.5-1ubuntu11.10.5-21.10.6-1 Show 8 moreShow less1.12.1+g01b65bf-4+deb8u11ubuntu0.14.04.12.6.3-1~ubuntu14.04.12.6.4-2~ubuntu14.04.12.6.5-1~ubuntu14.04.12.6.6-1~ubuntu14.04.02.6.8-1~ubuntu14.04.0~esm12.6.10-1~ubuntu14.04.0~esm12.6.10-1~ubuntu14.04.0~esm2 |
2.6.10-1~ubuntu14.04.0~esm3 |
wiresharkUbuntu:Pro:16.04:LTS |
before 2.6.10-1~ubuntu16.04.0+esm2, plus listed versions 1.12.7+g7fc8978-11.12.8+g5b6e543-22.0.1+g59ea380-3build12.0.2+ga16e22e-12.2.6+g32dac6a-2ubuntu0.16.04 Show 7 moreShow less2.6.3-1~ubuntu16.04.12.6.4-2~ubuntu16.04.02.6.5-1~ubuntu16.04.02.6.6-1~ubuntu16.04.02.6.8-1~ubuntu16.04.02.6.10-1~ubuntu16.04.02.6.10-1~ubuntu16.04.0+esm1 |
2.6.10-1~ubuntu16.04.0+esm2 |
wiresharkUbuntu:Pro:18.04:LTS |
before 2.6.10-1~ubuntu18.04.0+esm2, plus listed versions 2.4.2-12.4.3-12.4.4-12.4.5-12.6.3-1~ubuntu18.04.1 Show 6 moreShow less2.6.4-2~ubuntu18.04.02.6.5-1~ubuntu18.04.02.6.6-1~ubuntu18.04.02.6.8-1~ubuntu18.04.02.6.10-1~ubuntu18.04.02.6.10-1~ubuntu18.04.0+esm1 |
2.6.10-1~ubuntu18.04.0+esm2 |
wiresharkUbuntu:Pro:14.04:LTS From an advisory covering 10 CVEs |
before 2.6.10-1~ubuntu14.04.0~esm3, plus listed versions 1.10.2-11.10.3-11.10.5-1ubuntu11.10.5-21.10.6-1 Show 8 moreShow less1.12.1+g01b65bf-4+deb8u11ubuntu0.14.04.12.6.3-1~ubuntu14.04.12.6.4-2~ubuntu14.04.12.6.5-1~ubuntu14.04.12.6.6-1~ubuntu14.04.02.6.8-1~ubuntu14.04.0~esm12.6.10-1~ubuntu14.04.0~esm12.6.10-1~ubuntu14.04.0~esm2 |
2.6.10-1~ubuntu14.04.0~esm3 |
wiresharkUbuntu:Pro:16.04:LTS From an advisory covering 10 CVEs |
before 2.6.10-1~ubuntu16.04.0+esm2, plus listed versions 1.12.7+g7fc8978-11.12.8+g5b6e543-22.0.1+g59ea380-3build12.0.2+ga16e22e-12.2.6+g32dac6a-2ubuntu0.16.04 Show 7 moreShow less2.6.3-1~ubuntu16.04.12.6.4-2~ubuntu16.04.02.6.5-1~ubuntu16.04.02.6.6-1~ubuntu16.04.02.6.8-1~ubuntu16.04.02.6.10-1~ubuntu16.04.02.6.10-1~ubuntu16.04.0+esm1 |
2.6.10-1~ubuntu16.04.0+esm2 |
wiresharkUbuntu:Pro:18.04:LTS From an advisory covering 10 CVEs |
before 2.6.10-1~ubuntu18.04.0+esm2, plus listed versions 2.4.2-12.4.3-12.4.4-12.4.5-12.6.3-1~ubuntu18.04.1 Show 6 moreShow less2.6.4-2~ubuntu18.04.02.6.5-1~ubuntu18.04.02.6.6-1~ubuntu18.04.02.6.8-1~ubuntu18.04.02.6.10-1~ubuntu18.04.02.6.10-1~ubuntu18.04.0+esm1 |
2.6.10-1~ubuntu18.04.0+esm2 |
wiresharkUbuntu:Pro:20.04:LTS From an advisory covering 10 CVEs |
before 3.2.3-1ubuntu0.1~esm2, plus listed versions 3.0.5-13.0.7-13.2.1-13.2.2-13.2.3-13.2.3-1ubuntu0.1~esm1 |
3.2.3-1ubuntu0.1~esm2 |
wiresharkUbuntu:Pro:22.04:LTS From an advisory covering 10 CVEs |
before 3.6.2-2ubuntu0.1~esm1, plus listed versions 3.4.7-1~exp13.4.9-13.6.2-1ubuntu13.6.2-2 |
3.6.2-2ubuntu0.1~esm1 |
libvirtopenSUSE:Leap 15.3 From an advisory covering 6 CVEs |
before 7.1.0-150300.6.23.1 | 7.1.0-150300.6.23.1 |
wiresharkopenSUSE:Leap 15.3 From an advisory covering 6 CVEs |
before 3.6.1-3.68.1 | 3.6.1-3.68.1 |
wiresharkopenSUSE:Tumbleweed From an advisory covering 5 CVEs |
before 3.6.1-1.1 | 3.6.1-1.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| affected, aliases, references | OSV | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-4185 is a high vulnerability (CVSS 7.5) in Wireshark, published December 30, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.06%, the 90th percentile. Fixed in wireshark 3.4.13-r0.
References
wireshark.org/security/wnpa-sec-2021-17.html
gitlab.com/wireshark/wireshark/-/issues/17745
gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4185.json
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R5AEK3XTOIOGCGUILUFISMGX54YJXWGJ
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Q6XGBKWSQFCVYUN4ZK3O3NJIFP3OAFVT
lists.debian.org/debian-lts-announce/2022/03/msg00041.html
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oracle.com/security-alerts/cpuapr2022.html
security.gentoo.org/glsa/202210-04
lists.debian.org/debian-lts-announce/2024/09/msg00049.html
nvd.nist.gov/vuln/detail/CVE-2021-4185
lists.fedoraproject.org/archives/list/[email protected]/message/Q6XGBKWSQFCVYUN4ZK3O3NJIFP3OAFVT
lists.fedoraproject.org/archives/list/[email protected]/message/R5AEK3XTOIOGCGUILUFISMGX54YJXWGJ
github.com/advisories/GHSA-wm4g-hw88-g25h
security.alpinelinux.org/vuln/CVE-2021-4185
errata.tuxcare.com/els_os/almalinux9.2esu/CLSA-2026-1777312619.html
security-tracker.debian.org/tracker/CVE-2021-4185
advisories.mageia.org/MGASA-2022-0004.html
bugs.mageia.org/show_bug.cgi?id=29832
wireshark.org/security/wnpa-sec-2021-16
wireshark.org/security/wnpa-sec-2021-17
wireshark.org/security/wnpa-sec-2021-18
wireshark.org/security/wnpa-sec-2021-20
wireshark.org/security/wnpa-sec-2021-21
wireshark.org/docs/relnotes/wireshark-3.4.11.html
wireshark.org/news/20211229.html
openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1610
nvd.nist.gov/vuln/detail/CVE-2021-22207
nvd.nist.gov/vuln/detail/CVE-2021-22191
nvd.nist.gov/vuln/detail/CVE-2021-4181
suse.com/support/update/announcement/2022/suse-su-20220375-1
bugzilla.suse.com/1194166
bugzilla.suse.com/1194167
bugzilla.suse.com/1194168
bugzilla.suse.com/1194169
bugzilla.suse.com/1194170
bugzilla.suse.com/1194171
bugzilla.suse.com/1194780
suse.com/security/cve/CVE-2021-4181
suse.com/security/cve/CVE-2021-4182
suse.com/security/cve/CVE-2021-4183
suse.com/security/cve/CVE-2021-4184
suse.com/security/cve/CVE-2021-4185
suse.com/security/cve/CVE-2021-4190
ubuntu.com/security/CVE-2021-4185
cve.org/CVERecord?id=CVE-2021-4185
ubuntu.com/security/notices/USN-7552-1
ubuntu.com/security/CVE-2021-4182
ubuntu.com/security/CVE-2021-4186
ubuntu.com/security/CVE-2021-39929
ubuntu.com/security/CVE-2022-0581
ubuntu.com/security/CVE-2022-0582
ubuntu.com/security/CVE-2022-0583
ubuntu.com/security/CVE-2022-0585
ubuntu.com/security/CVE-2022-0586
ubuntu.com/security/CVE-2022-3190
lists.opensuse.org/archives/list/[email protected]/thread/JAOH336QWFQFZUXO5FOHF4P6VJNY7R4L