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VulnerabilityPublished Updated

CVE-2026-0960: Wireshark · Infinite Loop

Affects WiresharkSource CVE Database V5

0

Not known to be exploited · CVSS 4.7 Medium : upgrade to 4.6.3 when convenient.

Data as of 26 Oct 2026, 10:12 UTC

CVSS 3.1 base score
4.7Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 3% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 4.6.3
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 14 Jan 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade Wireshark to 4.6.3.

Affected software

ProductAffectedFixed in
Wireshark FoundationWiresharkAffected
  • >=4.6.0 <4.6.3
Fixed in
  • 4.6.3
GitHubwireshark/wiresharkpkg:github/wireshark/wiresharkOther threatsAffected
  • =4.6.0
  • =4.6.1
  • =4.6.2
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

To mitigate CVE-2026-0960, organizations should: 1) Upgrade Wireshark to a version where this vulnerability is patched once the vendor releases an update. 2) Until a patch is available, avoid opening or processing untrusted or suspicious HTTP3 traffic captures in Wireshark. 3) Use alternative network analysis tools that do not exhibit this vulnerability for HTTP3 traffic inspection. 4) Implement strict access controls to limit who can run Wireshark and open capture files, reducing the risk of malicious input. 5) Educate users to avoid interacting with untrusted capture files that could trigger the infinite loop. 6) Monitor Wireshark usage and logs for signs of application hangs or crashes indicative of exploitation attempts. 7) Consider sandboxing Wireshark or running it in isolated environments to contain potential denial of service impacts.

Description

HTTP3 protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.2 allows denial of service

References

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