ReviewHigh
CVE-2026-76880
Wireshark Foundation Wireshark
RRC protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
- CVSS
- 7.5
- EPSS
- - - percentile
- CISA KEV
- Not listed
- Published
- 2026.08.20
Review
The CVSS severity warrants an early asset and exposure review.
Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 7.5
Vulnerability overview
RRC protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
Affected product and versions
- Product
- Wireshark Foundation Wireshark
- Affected versions
- >= 4.6.0 < 4.6.8, >= 4.4.0 < 4.4.18
- Fixed versions
- No verified fixed-version field is available yet
Recommended response sequence
Confirm exposure before applying a vendor-supported change.
- 1Identify
Confirm that Wireshark Foundation Wireshark and an affected version are present.
- 2Prioritize
Combine exploitation signals with asset exposure and business criticality.
- 3Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
- 4Verify
Recheck the version, service health, access paths, and relevant logs.
Technical data
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CWE
- CWE-787