Description
A vulnerability in the PE file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition, or possibly other expanded impacts, resulting from memory corruption on an affected device.
This vulnerability is due to improper boundary checks for content in PE files during scanning, which may result in an out-of-bounds buffer write. An attacker could exploit this vulnerability by submitting a crafted file that contains PE content to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to cause the ClamAV scanning process to terminate, resulting in a DoS condition on the affected software.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Cisco | Cisco Secure Endpoint | 7.0.5, 6.2.19, 7.3.3, 7.2.13, 6.1.5, 6.3.1, 6.2.5, 7.3.5, 6.2.1, 7.2.7, 7.1.1, 6.3.5, 6.2.9, 7.3.1, 6.1.7, 7.2.11, 7.2.3, 7.1.5, 6.3.3, 7.3.9, 6.2.3, 6.1.9, 6.0.9, 7.2.5, 6.0.7, 6.3.7, 1.12.3, 1.8.0, 1.11.1, 1.12.4, 1.10.0, 1.12.0, 1.8.1, 1.10.1, 1.12.1, 1.12.6, 1.14.0, 1.10.2, 1.12.7, 1.12.2, 1.6.… | — |
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 | 1.4.5+dfsg-1 | — |
| Debian 13 | clamav | No fix yet | — |
| Debian 12 | clamav | 1.4.6+dfsg-0+deb12u1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | clamav | 1.5.3+dfsg-0ubuntu0.26.04.1 | USN-8517-1 |
| Ubuntu 25.10 | clamav | No fix yet | — |
| Ubuntu 24.04 LTS | clamav | 1.5.3+dfsg-0ubuntu0.24.04.1 | USN-8517-1 |
| Ubuntu 22.04 LTS | clamav | 1.5.3+dfsg-0ubuntu0.22.04.2 | USN-8517-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | clamav | No fix yet | — |
| Ubuntu Pro 18.04 LTS | clamav | No fix yet | — |
| Ubuntu Pro 16.04 LTS | clamav | No fix yet | — |
| Ubuntu Pro 14.04 LTS | clamav | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | clamav | 1.5.3-150600.18.28.1 | SUSE-SU-2026:2835-1 |
| SLES 15 SP6 | clamav | 1.5.3-150600.18.28.1 | SUSE-SU-2026:2835-1 |
| SLES 15 SP5 | clamav | 1.5.3-150400.13.8.1 | SUSE-SU-2026:2834-1 |
| SLES 15 SP4 | clamav | 1.5.3-150400.13.8.1 | SUSE-SU-2026:2834-1 |
| SLES 12 SP5 | clamav | 1.5.3-3.56.1 | SUSE-SU-2026:2833-1 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | clamav | 1.5.3-160000.1.1 | SUSE-SU-2026:22574-1 |
| SLES for SAP 15 SP6 | clamav | 1.5.3-150600.18.28.1 | SUSE-SU-2026:2835-1 |
| SLES for SAP 15 SP5 | clamav | 1.5.3-150400.13.8.1 | SUSE-SU-2026:2834-1 |
| SLES for SAP 15 SP4 | clamav | 1.5.3-150400.13.8.1 | SUSE-SU-2026:2834-1 |
| SLES 16.0 | clamav | 1.5.3-160000.1.1 | SUSE-SU-2026:22574-1 |
| SLE Micro 5.5 | clamav | 1.5.3-150400.13.8.1 | SUSE-SU-2026:2834-2 |
| SLE HPC 15 SP5 | clamav | 1.5.3-150400.13.8.1 | SUSE-SU-2026:2834-1 |
| SLE HPC 15 SP4 | clamav | 1.5.3-150400.13.8.1 | SUSE-SU-2026:2834-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | clamav | 1.5.3-1.1 | openSUSE-SU-2026:11182-1 |
| openSUSE Leap 16.0 | clamav | 1.5.3-160000.1.1 | openSUSE-SU-2026:21252-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | clamav | 1.4.5-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | clamd1.4 +8 | 1.4.5-1.amzn2023.0.1 | ALAS2023-2026-1956 |
| Amazon Linux 2023 | clamd1.5 +8 | 1.5.3-1.amzn2023.0.1 | ALAS2023-2026-1955 |
| Amazon Linux 2 | clamd1.4 +8 | 1.4.5-1.amzn2.0.1 | ALAS2-2026-3820 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | clamav | 1.5.3-1 | — |
Advisories 12
- WID-SEC-2026-2173 ClamAV: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 22, 2026
- SUSE-SU-2026:2834-2 Security update for clamav SUSE / openSUSE Security Updates · Sep 17, 2026
- ALAS2-2026-3820 Important: clamav1.4 security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jul 20, 2026
- ALAS2023-2026-1955 Important: clamav1.5 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jul 20, 2026
- ALAS2023-2026-1956 Important: clamav1.4 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jul 20, 2026
- SUSE-SU-2026:22574-1 Security update for clamav SUSE / openSUSE Security Updates · Jul 15, 2026
- SUSE-SU-2026:2835-1 Security update for clamav SUSE / openSUSE Security Updates · Jul 10, 2026
- SUSE-SU-2026:2833-1 Security update for clamav SUSE / openSUSE Security Updates · Jul 10, 2026
- SUSE-SU-2026:2834-1 Security update for clamav SUSE / openSUSE Security Updates · Jul 10, 2026
- openSUSE-SU-2026:21252-1 Security update for clamav SUSE / openSUSE Security Updates · Jul 9, 2026
- USN-8517-1 clamav vulnerabilities Ubuntu Security Notices (USN) · Jul 8, 2026
- openSUSE-SU-2026:11182-1 clamav-1.5.3-1.1 on GA media SUSE / openSUSE Security Updates · Jul 5, 2026