Vulnerability · CVE-2026-0961
BLF file parser crash in Wireshark 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12 allows denial of service
Published Jan 14, 2026 · catalog updated Mar 27, 2026 · Wireshark Foundation Wireshark
Last checked Nov 2, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2026-0961. EPSS is 0.21%. Act only if a listed version of Wireshark Foundation Wireshark is installed.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
Same product and reporting
- CVE-2026-0962 · Medium
- CVE-2026-0960 · Medium
- CVE-2026-0959 · Medium
- CVE-2025-13946 · Medium
- CVE-2025-13945 · Medium
- Severity
- Medium5.5
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.21%
- Remediation
- Version ranges on file
- Affected products
- vendor Wireshark Foundation Wireshark 4.4.0 <4.4.13
BLF file parser crash in Wireshark 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12 allows denial of service
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- vendor Wireshark Foundation Wireshark 4.4.0 <4.4.134.4.0 <4.4.13
How to fix CVE-2026-0961
Upgrade
CVE-2026-0961 lists a fix boundary at 4.4.13. Compare the installed build with that boundary before you change production.
Version check
Seen in 4.4.0 <4.4.13
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2026-0961. EPSS is 0.21%. Act only if a listed version of Wireshark Foundation Wireshark is installed.
Which versions are affected?
Compare what you have installed with Wireshark Foundation Wireshark 4.4.0 <4.4.13 4.4.0 <4.4.13. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.21%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
Timeline
Detection, updates, and resolution for this record.
Jan 14, 2026 · EUVD
Detected
BLF file parser crash in Wireshark 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12 allows denial of service
Mar 27, 2026 · EUVD
Updated
BLF file parser crash in Wireshark 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12 allows denial of service
Sources
- CVE.orgVulnerability recordCVE-2026-0961
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-0961
30-day exploitation probability 0.21%
first.org - EUVDVulnerability recordEUVD-2026-2433
BLF file parser crash in Wireshark 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12 allows denial of service
euvd.enisa.europa.eu
References
Freshness
Last verified in this catalog Nov 2, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- CVE.orgOct 30, 2026
- FIRST EPSSOct 30, 2026
- EUVDOct 30, 2026