CVE-2018-6836

Name: CVE-2018-6836
Creator: NVD / NIST
Published: 2018-02-08T07:29:01.197+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.77%

Last modified Jun 17, 2026

CVE-2018-6836 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 2.77% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

2.77%

84.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-763

Affected Software

Vendor	Product	Versions
Wireshark	Wireshark	<= 2.4.4

References

https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14397Exploit, Issue Tracking, Third Party Advisory
https://code.wireshark.org/review/#/c/25660/Issue Tracking, Patch
https://code.wireshark.org/review/#/c/25660/2/wiretap/netmon.cPatch
https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=28960d79cca262ac6b974f339697b299a1e28fef
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14397Exploit, Issue Tracking, Third Party Advisory
https://code.wireshark.org/review/#/c/25660/Issue Tracking, Patch
https://code.wireshark.org/review/#/c/25660/2/wiretap/netmon.cPatch
https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=28960d79cca262ac6b974f339697b299a1e28fef

Timeline

Published: Feb 8, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-6836?

How severe is CVE-2018-6836?

Severity scoring for CVE-2018-6836 is pending analysis. The EPSS model estimates a 2.77% probability of exploitation in the next 30 days.

How do I fix CVE-2018-6836?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-6836?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST