Description
A vulnerability in the Object Linking and Embedding 2 (OLE2) decryption routine of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
This vulnerability is due to an integer underflow in a bounds check that allows for a heap buffer overflow read. An attacker could exploit this vulnerability by submitting a crafted file containing OLE2 content to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to terminate the ClamAV scanning process, resulting in a DoS condition on the affected software.
For a description of this vulnerability, see the .
Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
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, 7.2.5, 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, 1.12.2, 1.6.0, 1.11.0, 1.7.0, 1.13… | — |
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 | 1.4.2+dfsg-1 | — |
| Debian 13 | clamav | 1.4.2+dfsg-1 | — |
| Debian 12 | clamav | 1.0.9+dfsg-1~deb12u1 | — |
| Debian 11 | clamav | 1.0.9+dfsg-1~deb11u1 | DLA-4292-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | clamav | 1.0.8+dfsg-0ubuntu0.24.04.1 | USN-7229-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | clamav | 1.4.2-150600.18.6.1 | SUSE-SU-2025:0327-1 |
| SLES 15 SP5 | clamav | 1.4.2-150200.8.3.1 | SUSE-SU-2025:0325-1 |
| SLES 15 SP4 | clamav | 1.4.2-150200.8.3.1 | SUSE-SU-2025:0325-1 |
| SLES 15 SP3 | clamav | 1.4.2-150200.8.3.1 | SUSE-SU-2025:0325-1 |
| SLES 12 SP5 | clamav | 1.4.2-3.36.1 | SUSE-SU-2025:0328-1 |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP5 | clamav | 1.4.2-150200.8.3.1 | SUSE-SU-2025:0325-1 |
| SLES for SAP 15 SP4 | clamav | 1.4.2-150200.8.3.1 | SUSE-SU-2025:0325-1 |
| SLES for SAP 15 SP3 | clamav | 1.4.2-150200.8.3.1 | SUSE-SU-2025:0325-1 |
| SLE Micro 5.5 | clamav | 1.4.2-150200.8.3.1 | SUSE-SU-2025:0325-1 |
| SLE HPC 15 SP5 | clamav | 1.4.2-150200.8.3.1 | SUSE-SU-2025:0325-1 |
| SLE HPC 15 SP4 | clamav | 1.4.2-150200.8.3.1 | SUSE-SU-2025:0325-1 |
| SLE HPC 15 SP3 | clamav | 1.4.2-150200.8.3.1 | SUSE-SU-2025:0325-1 |
| SUSE Manager Server 4.3 | clamav | 1.4.2-150200.8.3.1 | SUSE-SU-2025:0325-1 |
| SUSE Manager Proxy 4.3 | clamav | 1.4.2-150200.8.3.1 | SUSE-SU-2025:0325-1 |
| SUSE Enterprise Storage 7.1 | clamav | 1.4.2-150200.8.3.1 | SUSE-SU-2025:0325-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | clamav | 1.4.2-1.1 | openSUSE-SU-2025:14683-1 |
| openSUSE Leap 15.6 | clamav | 1.4.2-150600.18.6.1 | SUSE-SU-2025:0327-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | clamav | 1.4.2-r0 | — |
| Alpine v3.23 | clamav | 1.4.2-r0 | — |
| Alpine v3.22 | clamav | 1.4.2-r0 | — |
| Alpine v3.21 | clamav | 1.4.2-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | clamd1.4 +8 | 1.4.2-1.amzn2023.0.1 | ALAS2023-2025-866 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | clamav-1.4 | 1.4.2-r0 | — |
Advisories 8
- USN-7229-1 clamav vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-4292-1 clamav - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2025:0325-1 Security update for clamav SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2025:14683-1 clamav-1.4.2-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:0328-1 Security update for clamav SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2025-0177 ClamAV und Cisco Secure Endpoint: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Sep 4, 2025
- SUSE-SU-2025:0327-1 Security update for clamav SUSE / openSUSE Security Updates · May 2, 2025
- ALAS2023-2025-866 Moderate: clamav1.4 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Mar 5, 2025