CVE-2018-6836
9.8
CRITICAL · CVSS 3.0 · EPSS 2.7% (pctl 86)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
Description
The netmonrec_comment_destroy function in wiretap/netmon.c in Wireshark through 2.4.4 performs a free operation on an uninitialized memory address, which allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact.
Scoring
| CVSS | 9.8 (CRITICAL, v3.0) |
|---|---|
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 2.72% — more likely to be exploited than 86% of all CVEs |
| Weakness | CWE-763 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2018-02-08 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| wireshark | wireshark |
References
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14397
- https://code.wireshark.org/review/#/c/25660/
- https://code.wireshark.org/review/#/c/25660/2/wiretap/netmon.c
- https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=28960d79cca262ac6b974f339697b299a1e28fef
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14397
- https://code.wireshark.org/review/#/c/25660/
- https://code.wireshark.org/review/#/c/25660/2/wiretap/netmon.c
- https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=28960d79cca262ac6b974f339697b299a1e28fef
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