Servers and applications
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.
- Severity
- Medium 5.5
- Published
- 7 Aug 2017
- Last changed
- 17 Jun 2026
- Added to UpHeron
- 1 Nov 2026
- Exploit chance
- 1.4% in the next 30 daysHigher than 72% of CVEs. EPSS by FIRST, 11 Nov 2026
- Weakness
- Use after free (CWE-416)
- Attack
- Needs local access · No login needed · Needs someone to click or open something
- Attacker can
- Take it down
- CVSS vector
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H- Sources
- NVD
Affected software
| Software | Affected versions |
|---|---|
ClamAVServers and applications · cpe:a:clamav:clamav |
|