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CVE-2026-6528

Loop with Unreachable Exit Condition ('Infinite Loop') in Wireshark

5.5 MediumFix available

TLS protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.4 allows denial of service

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

0.14%Up 0.1 points since Apr 30, 2026
90%50%10%1%

What each source reports

CVE List Score used 5.5

Loop with Unreachable Exit Condition ('Infinite Loop') in Wireshark

TLS protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.4 allows denial of service

Record
CVE-2026-6528
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-835
Updated
2026-11-02
EUVDEUVD-2026-26335 5.5

TLS protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.4 allows denial of service

Record
EUVD-2026-26335
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
GitHub AdvisoriesGHSA-3h47-gjh4-rmq3 5.5

TLS protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.4 allows denial of service

TLS protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.4 allows denial of service

Record
GHSA-3h47-gjh4-rmq3
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-835
Updated
2026-11-02
NVD 5.5

TLS protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.4 allows denial of service

Record
CVE-2026-6528
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-835
Updated
2026-11-02
OSV 5.5

Loop with Unreachable Exit Condition ('Infinite Loop') in Wireshark

TLS protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.4 allows denial of service

Record
CVE-2026-6528
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-835
Updated
2026-11-02
OSVDEBIAN-CVE-2026-6528 5.5

TLS protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.4 allows denial of service

Record
DEBIAN-CVE-2026-6528
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-2026-6528 5.5

TLS protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.4 allows denial of service

Record
UBUNTU-CVE-2026-6528
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
OSVopenSUSE-SU-2026:10686-1 No score

libwireshark19-4.6.5-1.1 on GA media

These are all security issues fixed in the libwireshark19-4.6.5-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2026:10686-1
Updated
2026-11-02
OSVSUSE-SU-2026:3501-1 No score

Security update for wireshark

This update for wireshark fixes the following issues:

Update to version 4.6.7:

  • CVE-2026-5299: ICMPv6 dissector crash (bsc#1263757).
  • CVE-2026-5401: AFP dissector crash (bsc#1263756).
  • CVE-2026-5402: TLS dissector crash and possible code execution (bsc#1263755).
  • CVE-2026-5403: SBC audio codec crash (bsc#1263765).
  • CVE-2026-5404: K12 RF5 file parser crash (bsc#1263766).
  • CVE-2026-5405: RDP dissector crash (bsc#1263767).
  • CVE-2026-5406: FC-SWILS dissector crash (bsc#1263754).
  • CVE-2026-5407: SMB2 dissector infinite loop (bsc#1263753).
  • CVE-2026-5408: BT-DHT dissector crash (bsc#1263752).
  • CVE-2026-5409: Monero dissector crash (bsc#1263751).
  • CVE-2026-5653: DCP-ETSI dissector crash (bsc#1263750).
  • CVE-2026-5654: AMR-NB audio codec crash (bsc#1263749).
  • CVE-2026-5655: SDP dissector crash (bsc#1263748).
  • CVE-2026-5656: Profile import crash and possible code execution (bsc#1263809).
  • CVE-2026-5657: iLBC audio codec crash (bsc#1263747).
  • CVE-2026-6519: MBIM protocol dissector infinite loop (bsc#1263746).
  • CVE-2026-6520: OpenFlow v6 protocol dissector infinite loop (bsc#1263745).
  • CVE-2026-6521: OpenFlow v5 protocol dissector infinite loops (bsc#1263744).
  • CVE-2026-6522: RPKI-Router protocol dissector infinite loop (bsc#1263743).
  • CVE-2026-6523: GNW protocol dissector infinite loop (bsc#1263742).
  • CVE-2026-6524: MySQL protocol dissector crash (bsc#1263741).
  • CVE-2026-6525: IEEE 802.11 protocol dissector crash (bsc#1263810).
  • CVE-2026-6526: RTSP protocol dissector crash (bsc#1263740).
  • CVE-2026-6527: ASN.1 PER dissector crash (bsc#1263739).
  • CVE-2026-6528: TLS protocol dissector infinite loop (bsc#1263738).
  • CVE-2026-6529: iLBC audio codec crash (bsc#1263737).
  • CVE-2026-6530: DCP-ETSI protocol dissector crash (bsc#1263736).
  • CVE-2026-6531: SANE protocol dissector infinite loop (bsc#1263735).
  • CVE-2026-6532: Kismet protocol dissector crash (bsc#1263734).
  • CVE-2026-6533: Dissection engine LZ77 decompression crash (bsc#1263733).
  • CVE-2026-6534: USB HID dissector infinite loop (bsc#1263732).
  • CVE-2026-6535: Dissection engine zlib decompression crash (bsc#1263731).
  • CVE-2026-6536: DLMS/COSEM dissector infinite loop (bsc#1263730).
  • CVE-2026-6537: ZigBee dissector crash (bsc#1263729).
  • CVE-2026-6538: BEEP dissector crash (bsc#1263728).
  • CVE-2026-6867: SMB2 protocol dissector crash (bsc#1263727).
  • CVE-2026-6868: HTTP protocol dissector crash (bsc#1263762).
  • CVE-2026-6869: WebSocket protocol dissector crash (bsc#1263726).
  • CVE-2026-6870: GSM RP protocol dissector crash (bsc#1263725).
  • CVE-2026-7375: UDS protocol dissector infinite loop (bsc#1263761).
  • CVE-2026-7376: Sharkd utility crash (bsc#1263760).
  • CVE-2026-7378: Sharkd utility crash (bsc#1263759).
  • CVE-2026-7379: Sharkd utility memory leak (bsc#1263758).
  • CVE-2026-9759: ROHC protocol dissector crash (bsc#1266670).
  • CVE-2026-15163: Denial of Service via multiple protocol dissector infinite loops (bsc#1271133).
  • CVE-2026-15164: Denial of Service vulnerability in ciscodump (bsc#1271134).
  • CVE-2026-15165: Denial of Service via TLS ECH decryptor crash (bsc#1271135).
  • CVE-2026-15166: Denial of Service via IEEE 802.11 protocol dissector crash (bsc#1271136).
  • CVE-2026-15167: Denial of Service via DBS Etherwatch file parser crash (bsc#1271137).
  • CVE-2026-15168: BLF file parser allows possible information disclosure (bsc#1271138).
  • CVE-2026-15169: Denial of Service via UMTS FP protocol dissector crash (bsc#1271139).
  • CVE-2026-15170: Denial of service via Z39.50 protocol dissector crash (bsc#1271140).
  • CVE-2026-15171: Denial of service via SSH protocol dissector crash (bsc#1271141).
  • CVE-2026-15172: Denial of service via FMP/NOTIFY protocol dissector crash (bsc#1271142).
  • CVE-2026-15173: Denial of Service via pcapng file parser crash (bsc#1271143).
  • CVE-2026-15174: Denial of Service via Catapult DCT2000 protocol dissector crash (bsc#1271144).
Record
SUSE-SU-2026:3501-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
wireshark
Debian:14
 before 4.6.5-1, plus listed versions
4.4.7-14.4.8-0exp14.4.9-14.6.0-0exp14.6.0-1
Show 8 moreShow less
4.6.0~rc1-0exp14.6.0~rc1-0exp24.6.1-14.6.1-24.6.2-14.6.2-34.6.3-14.6.4-1
4.6.5-1
wireshark
SUSE:Linux Enterprise Module for Basesystem 15 SP7
From an advisory covering 56 CVEs
 before 4.6.7-150700.21.11.1
4.6.7-150700.21.11.1
wireshark
SUSE:Linux Enterprise Module for Desktop Applications 15 SP7
From an advisory covering 56 CVEs
 before 4.6.7-150700.21.11.1
4.6.7-150700.21.11.1
wireshark
Ubuntu:Pro:14.04:LTS
 All versions, plus listed versions
1.10.2-11.10.3-11.10.5-1ubuntu11.10.5-21.10.6-1
Show 9 moreShow less
1.12.1+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~esm22.6.10-1~ubuntu14.04.0~esm3
 None known
wireshark
Ubuntu:Pro:16.04:LTS
 All versions, 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 8 moreShow less
2.6.3-1~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+esm12.6.10-1~ubuntu16.04.0+esm2
 None known
wireshark
Ubuntu:Pro:18.04:LTS
 All versions, plus listed versions
2.4.2-12.4.3-12.4.4-12.4.5-12.6.3-1~ubuntu18.04.1
Show 7 moreShow less
2.6.4-2~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+esm12.6.10-1~ubuntu18.04.0+esm2
 None known
wireshark
Ubuntu:Pro:20.04:LTS
 All versions, plus listed versions
3.0.5-13.0.7-13.2.1-13.2.2-13.2.3-13.2.3-1ubuntu0.1~esm13.2.3-1ubuntu0.1~esm2
 None known
wireshark
Ubuntu:Pro:22.04:LTS
 All versions, plus listed versions
3.4.7-1~exp13.4.9-13.6.2-1ubuntu13.6.2-23.6.2-2ubuntu0.1~esm1
 None known
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
Ubuntu:26.10
 All versions, plus listed versions
4.6.4-14.6.6-14.6.6-24.6.6-2build1
 None known
wireshark
Ubuntu:26.04:LTS
 All versions, plus listed versions
4.4.7-14.6.0-14.6.1-24.6.2-34.6.3-14.6.4-1
 None known
wireshark
openSUSE:Tumbleweed
From an advisory covering 43 CVEs
 before 4.6.5-1.1
4.6.5-1.1

History

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

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

In short

CVE-2026-6528 is a medium vulnerability (CVSS 5.5) in Wireshark, published April 30, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.14%, the 3rd percentile. Fixed in wireshark 4.6.5-1.

References

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