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CVE-2026-0959

Out-of-bounds Write in Wireshark

5.3 MediumFix available

IEEE 802.11 protocol dissector crash in Wireshark 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12 allows denial of service

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

0.21%Up 0.2 points since Jan 15, 2026
90%50%10%1%

What each source reports

CVE List Score used 5.3

Out-of-bounds Write in Wireshark

IEEE 802.11 protocol dissector crash in Wireshark 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12 allows denial of service

Record
CVE-2026-0959
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-787
Updated
2026-11-02
EUVDEUVD-2026-2431 5.3

IEEE 802.11 protocol dissector crash in Wireshark 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12 allows denial of service

Record
EUVD-2026-2431
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
GitHub AdvisoriesGHSA-fp4m-fp9q-cxfx 5.3

IEEE 802.11 protocol dissector crash in Wireshark 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12 allows...

IEEE 802.11 protocol dissector crash in Wireshark 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12 allows denial of service

Record
GHSA-fp4m-fp9q-cxfx
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-787
Updated
2026-11-02
NVD 5.3

IEEE 802.11 protocol dissector crash in Wireshark 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12 allows denial of service

Record
CVE-2026-0959
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-787
Updated
2026-11-02
OSV 5.3

Out-of-bounds Write in Wireshark

IEEE 802.11 protocol dissector crash in Wireshark 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12 allows denial of service

Record
CVE-2026-0959
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-787
Updated
2026-11-02
OSVDEBIAN-CVE-2026-0959 6.5

IEEE 802.11 protocol dissector crash in Wireshark 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12 allows denial of service

Record
DEBIAN-CVE-2026-0959
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
Show 12 moreShow less
OSVOESA-2026-1545 5.5

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):

Wireshark is a widely used network protocol analyzer. In Wireshark versions 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12, there is an out-of-bounds write vulnerability in its IEEE 802.11 protocol dissector. An attacker can exploit this vulnerability by crafting a malicious network packet. During the parsing process, this triggers the vulnerability, causing the Wireshark process to crash, thereby achieving a denial of service attack.(CVE-2026-0959)

Wireshark is a widely used network protocol analyzer. In versions 4.6.0 to 4.6.2, a flaw exists in its HTTP3 protocol dissector. When processing network packets of a specific format, it enters an unreachable exit condition (infinite loop), causing the Wireshark process to hang or crash, resulting in a denial of service.(CVE-2026-0960)

Wireshark is a widely used network protocol analyzer. A vulnerability exists in the BLF file parser of Wireshark versions 4.6.0 to 4.6.2 and versions 4.4.0 to 4.4.12. An attacker can craft a malicious BLF file to trigger an out-of-bounds write in the parser, leading to a crash and resulting in a denial of service.(CVE-2026-0961)

SOME/IP-SD protocol dissector crash in Wireshark 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12 allows denial of service(CVE-2026-0962)

USB HID protocol dissector memory exhaustion in Wireshark 4.6.0 to 4.6.3 and 4.4.0 to 4.4.13 allows denial of service(CVE-2026-3201)

RF4CE Profile protocol dissector crash in Wireshark 4.6.0 to 4.6.3 and 4.4.0 to 4.4.13 allows denial of service(CVE-2026-3203)

Record
OESA-2026-1545
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVOESA-2026-1547 5.5

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):

Wireshark is a widely used network protocol analyzer. In Wireshark versions 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12, there is an out-of-bounds write vulnerability in its IEEE 802.11 protocol dissector. An attacker can exploit this vulnerability by crafting a malicious network packet. During the parsing process, this triggers the vulnerability, causing the Wireshark process to crash, thereby achieving a denial of service attack.(CVE-2026-0959)

Wireshark is a widely used network protocol analyzer. In versions 4.6.0 to 4.6.2, a flaw exists in its HTTP3 protocol dissector. When processing network packets of a specific format, it enters an unreachable exit condition (infinite loop), causing the Wireshark process to hang or crash, resulting in a denial of service.(CVE-2026-0960)

Wireshark is a widely used network protocol analyzer. A vulnerability exists in the BLF file parser of Wireshark versions 4.6.0 to 4.6.2 and versions 4.4.0 to 4.4.12. An attacker can craft a malicious BLF file to trigger an out-of-bounds write in the parser, leading to a crash and resulting in a denial of service.(CVE-2026-0961)

SOME/IP-SD protocol dissector crash in Wireshark 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12 allows denial of service(CVE-2026-0962)

USB HID protocol dissector memory exhaustion in Wireshark 4.6.0 to 4.6.3 and 4.4.0 to 4.4.13 allows denial of service(CVE-2026-3201)

RF4CE Profile protocol dissector crash in Wireshark 4.6.0 to 4.6.3 and 4.4.0 to 4.4.13 allows denial of service(CVE-2026-3203)

Record
OESA-2026-1547
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVOESA-2026-1548 5.5

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):

Wireshark is a widely used network protocol analyzer. In Wireshark versions 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12, there is an out-of-bounds write vulnerability in its IEEE 802.11 protocol dissector. An attacker can exploit this vulnerability by crafting a malicious network packet. During the parsing process, this triggers the vulnerability, causing the Wireshark process to crash, thereby achieving a denial of service attack.(CVE-2026-0959)

Wireshark is a widely used network protocol analyzer. In versions 4.6.0 to 4.6.2, a flaw exists in its HTTP3 protocol dissector. When processing network packets of a specific format, it enters an unreachable exit condition (infinite loop), causing the Wireshark process to hang or crash, resulting in a denial of service.(CVE-2026-0960)

Wireshark is a widely used network protocol analyzer. A vulnerability exists in the BLF file parser of Wireshark versions 4.6.0 to 4.6.2 and versions 4.4.0 to 4.4.12. An attacker can craft a malicious BLF file to trigger an out-of-bounds write in the parser, leading to a crash and resulting in a denial of service.(CVE-2026-0961)

SOME/IP-SD protocol dissector crash in Wireshark 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12 allows denial of service(CVE-2026-0962)

USB HID protocol dissector memory exhaustion in Wireshark 4.6.0 to 4.6.3 and 4.4.0 to 4.4.13 allows denial of service(CVE-2026-3201)

RF4CE Profile protocol dissector crash in Wireshark 4.6.0 to 4.6.3 and 4.4.0 to 4.4.13 allows denial of service(CVE-2026-3203)

Record
OESA-2026-1548
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVOESA-2026-1549 5.5

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):

Wireshark is a widely used network protocol analyzer. In Wireshark versions 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12, there is an out-of-bounds write vulnerability in its IEEE 802.11 protocol dissector. An attacker can exploit this vulnerability by crafting a malicious network packet. During the parsing process, this triggers the vulnerability, causing the Wireshark process to crash, thereby achieving a denial of service attack.(CVE-2026-0959)

Wireshark is a widely used network protocol analyzer. In versions 4.6.0 to 4.6.2, a flaw exists in its HTTP3 protocol dissector. When processing network packets of a specific format, it enters an unreachable exit condition (infinite loop), causing the Wireshark process to hang or crash, resulting in a denial of service.(CVE-2026-0960)

Wireshark is a widely used network protocol analyzer. A vulnerability exists in the BLF file parser of Wireshark versions 4.6.0 to 4.6.2 and versions 4.4.0 to 4.4.12. An attacker can craft a malicious BLF file to trigger an out-of-bounds write in the parser, leading to a crash and resulting in a denial of service.(CVE-2026-0961)

SOME/IP-SD protocol dissector crash in Wireshark 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12 allows denial of service(CVE-2026-0962)

USB HID protocol dissector memory exhaustion in Wireshark 4.6.0 to 4.6.3 and 4.4.0 to 4.4.13 allows denial of service(CVE-2026-3201)

RF4CE Profile protocol dissector crash in Wireshark 4.6.0 to 4.6.3 and 4.4.0 to 4.4.13 allows denial of service(CVE-2026-3203)

Record
OESA-2026-1549
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVOESA-2026-1550 5.5

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):

Wireshark is a widely used network protocol analyzer. In Wireshark versions 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12, there is an out-of-bounds write vulnerability in its IEEE 802.11 protocol dissector. An attacker can exploit this vulnerability by crafting a malicious network packet. During the parsing process, this triggers the vulnerability, causing the Wireshark process to crash, thereby achieving a denial of service attack.(CVE-2026-0959)

Wireshark is a widely used network protocol analyzer. In versions 4.6.0 to 4.6.2, a flaw exists in its HTTP3 protocol dissector. When processing network packets of a specific format, it enters an unreachable exit condition (infinite loop), causing the Wireshark process to hang or crash, resulting in a denial of service.(CVE-2026-0960)

Wireshark is a widely used network protocol analyzer. A vulnerability exists in the BLF file parser of Wireshark versions 4.6.0 to 4.6.2 and versions 4.4.0 to 4.4.12. An attacker can craft a malicious BLF file to trigger an out-of-bounds write in the parser, leading to a crash and resulting in a denial of service.(CVE-2026-0961)

SOME/IP-SD protocol dissector crash in Wireshark 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12 allows denial of service(CVE-2026-0962)

USB HID protocol dissector memory exhaustion in Wireshark 4.6.0 to 4.6.3 and 4.4.0 to 4.4.13 allows denial of service(CVE-2026-3201)

RF4CE Profile protocol dissector crash in Wireshark 4.6.0 to 4.6.3 and 4.4.0 to 4.4.13 allows denial of service(CVE-2026-3203)

Record
OESA-2026-1550
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2026-0959 5.3

IEEE 802.11 protocol dissector crash in Wireshark 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12 allows denial of service

Record
UBUNTU-CVE-2026-0959
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVAZL-74537 No score

CVE-2026-0959 affecting package wireshark 4.4.7-2

IEEE 802.11 protocol dissector crash in Wireshark 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12 allows denial of service

Record
AZL-74537
Updated
2026-11-05
OSVopenSUSE-SU-2026:10056-1 No score

libwireshark19-4.6.3-1.1 on GA media

These are all security issues fixed in the libwireshark19-4.6.3-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2026:10056-1
Updated
2026-11-02
OSVopenSUSE-SU-2026:20151-1 No score

Security update for wireshark

This update for wireshark fixes the following issues:

Update to Wireshark 4.4.13:

  • CVE-2025-11626: MONGO dissector infinite loop (bsc#1251933).
  • CVE-2025-13499: Kafka dissector crash (bsc#1254108).
  • CVE-2025-13945: HTTP3 dissector crash (bsc#1254471).
  • CVE-2025-13946: MEGACO dissector infinite loop (bsc#1254472).
  • CVE-2025-9817: SSH dissector crash (bsc#1249090).
  • CVE-2026-0959: IEEE 802.11 dissector crash (bsc#1256734).
  • CVE-2026-0961: BLF file parser crash (bsc#1256738).
  • CVE-2026-0962: SOME/IP-SD dissector crash (bsc#1256739).

Full changelog:

https://www.wireshark.org/docs/relnotes/wireshark-4.4.13.html

Record
openSUSE-SU-2026:20151-1
Updated
2026-11-02
OSVSUSE-SU-2026:0237-1 No score

Security update for wireshark

This update for wireshark fixes the following issues:

  • CVE-2026-0959: IEEE 802.11 dissector crash (bsc#1256734).
  • CVE-2026-0960: HTTP3 dissector infinite loop (bsc#1256736).
  • CVE-2026-0962: SOME/IP-SD dissector crash (bsc#1256739).
Record
SUSE-SU-2026:0237-1
Updated
2026-11-02
OSVSUSE-SU-2026:1169-1 No score

Security update for wireshark

This update for wireshark fixes the following issues:

Update Wireshark to version 4.6.4 (jsc#PED-15400).

  • CVE-2024-9780: ITS dissector crash (bsc#1231475).
  • CVE-2024-9781: AppleTalk and RELOAD Framing dissector crash (bsc#1231476).
  • CVE-2024-11595: Loop with Unreachable Exit Condition ('Infinite Loop') in Wireshark (bsc#1233594).
  • CVE-2024-11596: Buffer Over-read in Wireshark (bsc#1233593).
  • CVE-2025-1492: Uncontrolled Recursion in Wireshark (bsc#1237414).
  • CVE-2025-5601: Column handling crashes in Wireshark allows denial of service (bsc#1244081).
  • CVE-2025-9817: NULL Pointer Dereference in ssh dissector (bsc#1249090).
  • CVE-2025-13499: a malformed packet can lead to a Kafka dissector crash (bsc#1254108).
  • CVE-2025-13674: injecting a malformed packet can cause a crash (bsc#1254262).
  • CVE-2025-13945: HTTP3 dissector crash in Wireshark 4.6.0 and 4.6.1 allows denial of service (bsc#1254471).
  • CVE-2025-13946: MEGACO dissector infinite loop in Wireshark 4.6.0 to 4.6.1 and 4.4.0 to 4.4.11 allows denial of service (bsc#1254472).
  • CVE-2026-0959: denial of service via IEEE 802.11 protocol dissector crash (bsc#1256734).
  • CVE-2026-0960: denial of Service via HTTP3 protocol dissector infinite loop (bsc#1256736).
  • CVE-2026-0961: denial of Service vulnerability in BLF file parser (bsc#1256738).
  • CVE-2026-0962: denial of Service via SOME/IP-SD protocol dissector crash (bsc#1256739).
  • CVE-2026-3201: missing limit checks in USB HID protocol dissector's parse_report_descriptor function can lead to memory exhaustion (bsc#1258907).
  • CVE-2026-3202: missing checks in NTS-KE protocol dissector can lead to crash (bsc#1258908).
  • CVE-2026-3203: missing length checks in the RF4CE Profile protocol dissector can lead to illegal memory access and crash (bsc#1258909).

Also libvirt was rebuilt against wireshark for the libvirt plugin.

Record
SUSE-SU-2026:1169-1
Updated
2026-11-02
OSVSUSE-SU-2026:20222-1 No score

Security update for wireshark

This update for wireshark fixes the following issues:

Update to Wireshark 4.4.13:

  • CVE-2025-11626: MONGO dissector infinite loop (bsc#1251933).
  • CVE-2025-13499: Kafka dissector crash (bsc#1254108).
  • CVE-2025-13945: HTTP3 dissector crash (bsc#1254471).
  • CVE-2025-13946: MEGACO dissector infinite loop (bsc#1254472).
  • CVE-2025-9817: SSH dissector crash (bsc#1249090).
  • CVE-2026-0959: IEEE 802.11 dissector crash (bsc#1256734).
  • CVE-2026-0961: BLF file parser crash (bsc#1256738).
  • CVE-2026-0962: SOME/IP-SD dissector crash (bsc#1256739).

Full changelog:

https://www.wireshark.org/docs/relnotes/wireshark-4.4.13.html

Record
SUSE-SU-2026:20222-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
wireshark
Azure Linux:3
 through 4.4.7-2 None known
wireshark
Debian:13
 before 4.4.13-0+deb13u1, plus listed versions
4.4.7-14.4.8-0exp14.4.9-1
4.4.13-0+deb13u1
wireshark
Debian:14
 before 4.6.3-1, plus listed versions
4.4.7-14.4.8-0exp14.4.9-14.6.0-0exp14.6.0-1
Show 6 moreShow less
4.6.0~rc1-0exp14.6.0~rc1-0exp24.6.1-14.6.1-24.6.2-14.6.2-3
4.6.3-1
wireshark
Debian:13
From an advisory covering 9 CVEs
 before 4.4.13-0+deb13u1, plus listed versions
4.4.7-14.4.8-0exp14.4.9-1
4.4.13-0+deb13u1
wireshark
openEuler:24.03-LTS-SP3
From an advisory covering 6 CVEs
 before 4.4.14-1.oe2403sp3
4.4.14-1.oe2403sp3
wireshark
openEuler:22.03-LTS-SP4
From an advisory covering 6 CVEs
 before 4.4.14-1.oe2203sp4
4.4.14-1.oe2203sp4
wireshark
openEuler:24.03-LTS
From an advisory covering 6 CVEs
 before 4.4.14-1.oe2403
4.4.14-1.oe2403
wireshark
openEuler:24.03-LTS-SP1
From an advisory covering 6 CVEs
 before 4.4.14-1.oe2403sp1
4.4.14-1.oe2403sp1
wireshark
openEuler:24.03-LTS-SP2
From an advisory covering 6 CVEs
 before 4.4.14-1.oe2403sp2
4.4.14-1.oe2403sp2
wireshark
SUSE:Linux Enterprise Module for Basesystem 15 SP7
From an advisory covering 3 CVEs
 before 4.2.14-150600.18.35.1
4.2.14-150600.18.35.1
Show 12 moreShow less
Affected packages
PackageAffectedFixed
wireshark
SUSE:Linux Enterprise Module for Desktop Applications 15 SP7
From an advisory covering 3 CVEs
 before 4.2.14-150600.18.35.1
4.2.14-150600.18.35.1
wireshark
openSUSE:Leap 15.6
From an advisory covering 3 CVEs
 before 4.2.14-150600.18.35.1
4.2.14-150600.18.35.1
libvirt
SUSE:Linux Enterprise Module for Basesystem 15 SP7
From an advisory covering 18 CVEs
 before 11.0.0-150700.4.19.1
11.0.0-150700.4.19.1
wireshark
SUSE:Linux Enterprise Module for Basesystem 15 SP7
From an advisory covering 18 CVEs
 before 4.6.4-150700.21.8.1
4.6.4-150700.21.8.1
wireshark
SUSE:Linux Enterprise Module for Desktop Applications 15 SP7
From an advisory covering 18 CVEs
 before 4.6.4-150700.21.8.1
4.6.4-150700.21.8.1
libvirt
SUSE:Linux Enterprise Module for Server Applications 15 SP7
From an advisory covering 18 CVEs
 before 11.0.0-150700.4.19.1
11.0.0-150700.4.19.1
wireshark
SUSE:Linux Enterprise Server 16.0
From an advisory covering 8 CVEs
 before 4.4.13-160000.1.1
4.4.13-160000.1.1
wireshark
SUSE:Linux Enterprise Server for SAP applications 16.0
From an advisory covering 8 CVEs
 before 4.4.13-160000.1.1
4.4.13-160000.1.1
wireshark
Ubuntu:24.04:LTS
 All versions, plus listed versions
4.0.8-14.0.10-14.0.11-14.2.0-14.2.2-14.2.2-1.1build14.2.2-1.1build24.2.2-1.1build3
 None known
wireshark
Ubuntu:25.10
 All versions, plus listed versions
4.4.5-14.4.6-24.4.6-2build14.4.7-1
 None known
wireshark
openSUSE:Tumbleweed
From an advisory covering 4 CVEs
 before 4.6.3-1.1
4.6.3-1.1
wireshark
openSUSE:Leap 16.0
From an advisory covering 8 CVEs
 before 4.4.13-160000.1.1
4.4.13-160000.1.1

History

History
RecordedChangedSources
affected
factsOSV
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-0959 is a medium vulnerability (CVSS 5.3) in Wireshark, published January 14, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.21%, the 11th percentile. Fixed in wireshark 4.4.13-0+deb13u1.

References

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