CVE-2026-0960: Wireshark · Infinite Loop
Affects WiresharkSource CVE Database V5
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
- 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:HExploitation evidence
Disclosed: evidence found.
CVE published 14 Jan 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| Wireshark FoundationWireshark | Affected
| Fixed in
|
GitHubwireshark/wiresharkpkg:github/wireshark/wiresharkOther threats | Affected
| 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