Vulnerability Database

311,380

Total vulnerabilities in the database

CVE-2017-6420

The wwunpack function in libclamav/wwunpack.c in ClamAV 0.99.2 allows remote attackers to cause a denial of service (use-after-free) via a crafted PE file with WWPack compression.

Published: Aug 7, 2017
Updated: Nov 9, 2025
CVE: CVE-2017-6420
Severity: Low
Exploit:

CVSS v2:

Severity: Low
Score: 4.3
AV:N/AC:M/Au:N/C:N/I:N/A:P

CWEs:

CWE-416

Affected Software
References

Software	From	Fixed in
clamav / clamav	0.99.2	0.99.2.x

https://bugzilla.clamav.net/show_bug.cgi?id=11798
https://github.com/varsleak/varsleak-vul/blob/master/clamav-vul/use-after-free/clamav-use-after-free-pe.md
https://github.com/vrtadmin/clamav-devel/commit/dfc00cd3301a42b571454b51a6102eecf58407bc
https://security.gentoo.org/glsa/201804-16

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