Description
Integer overflow in ClamAV 0.88.1 and 0.88.4, and other versions before 0.88.5, allows remote attackers to cause a denial of service (scanning service crash) and execute arbitrary code via a crafted Portable Executable (PE) file that leads to a heap-based buffer overflow when less memory is allocated than expected.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | clamav | 0.88.5-1 | — |
| Debian 13 | clamav | 0.88.5-1 | — |
| Debian 12 | clamav | 0.88.5-1 | — |
| Debian 3.1 | clamav | 0.84-2.sarge.11 | DSA-1196-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | clamav | 0.103.3-1.4 | openSUSE-SU-2024:10685-1 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Exploit-DB 1
- Clam AntiVirus 0.88.4 - 'rebuildpe' Remote Heap Overflow (PoC) EDB-2587 · dos · Oct 17, 2006 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 2
- DSA-1196-1 clamav Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10685-1 clamav-0.103.3-1.4 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- ADV-2006-4750 vdb-entry
- ADV-2006-4034 vdb-entry
- 22488 third-party-advisory
- 22370 third-party-advisory
- VU#180864 third-party-advisory
- SUSE-SA:2006:060 vendor-advisory
- http://docs.info.apple.com/article.html?artnum=304829
- MDKSA-2006:184 vendor-advisory
- 22626 third-party-advisory
- ADV-2006-4136 vdb-entry
- 22421 third-party-advisory
- 20061016 Clam AntiVirus ClamAV rebuildpe Heap Overflow Vulnerability third-party-advisory
- ADV-2006-4264 vdb-entry
- 23155 third-party-advisory
- http://kolab.org/security/kolab-vendor-notice-13.txt
- 20535 vdb-entry
- APPLE-SA-2006-11-28 vendor-advisory
- GLSA-200610-10 vendor-advisory
- TA06-333A third-party-advisory
- 1017068 vdb-entry
- DSA-1196 vendor-advisory
- clamav-rebuildpe-bo(29607) vdb-entry
- 22551 third-party-advisory
- 22537 third-party-advisory
- 22498 third-party-advisory