Vulnerability DatabaseCVE-2026-76886
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CVE-2026-76886
Published:August 19, 2026
Updated:September 24, 2026
C12.22 protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
Affected Packages
https://gitlab.com/wireshark/wireshark.git (SCM_GIT):
Affected version(s) >=v4.4.0 <v4.4.18
Fix Suggestion:
Update to version v4.4.18
https://gitlab.com/wireshark/wireshark.git (SCM_GIT):
Affected version(s) >=v4.6.0 <v4.6.8
Fix Suggestion:
Update to version v4.6.8
Related Resources (5)
https://gitlab.com/wireshark/wireshark/-/work_items/21439
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/76xxx/CVE-2026-76886.json
https://nvd.nist.gov/vuln/detail/CVE-2026-76886
https://gitlab.com/wireshark/wireshark/-/work_items/21446
https://www.wireshark.org/security/wnpa-sec-2026-75.html
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CVSS v4
Base Score:
9.2
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Heap-based Buffer Overflow
CWE-122
EPSS
Base Score:
0.32