CVE-2026-20031
ClamAV CSS Image Parsing Error Handling Denial of Service Vulnerability
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
A vulnerability in the HTML Cascading Style Sheets (CSS) module 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 improper error handling when splitting UTF-8 strings. An attacker could exploit this vulnerability by submitting a crafted HTML file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to terminate the scanning process.
| CWE | CWE-248 |
| Vendor | cisco |
| Product | cisco secure endpoint |
| Ecosystems | |
| Industries | NetworkingTelecommunications |
| Published | Mar 4, 2026 |
| Last Updated | Mar 5, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Affected Versions
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 1.6.0 1.9.0 1.11.0 1.7.0 1.13.0 1.8.4 1.13.1 1.9.1 1.12.5 1.13.2 2.0.2 1.1.0 2.0.0 2.0.1 8.1.7.21512 8.1.7 8.1.5 8.1.3.21242 8.1.3 8.1.5.21322 8.1.7.21417 2.1.0.14 2.2.0 2.3.0 2.4.0 2.5.0 2.6.0 2.7.0 2.8.0 2.9.0 2.10.0 2.10.1 2.11.0 1.14.1 1.15.1 1.15.2 1.15.3 1.15.4 1.15.5 1.15.6 1.16.0 1.16.1 1.16.2 1.16.3 1.18.0 1.18.1 1.20.0 1.21.0 1.21.1 1.21.2 1.21.3 1.22.0 1.22.1 1.22.2 1.22.3 1.22.4 1.24.0 1.24.1 1.24.2 1.24.3 1.24.4 1.26.0 1.24.5 1.26.1 1.27.0 1.15.0 1.17.0 1.17.1 1.17.2 1.19.0 1.20.1 1.20.2 1.20.3 1.20.4 1.20.5 1.20.6 1.23.0 1.23.1 1.20.7 1.20.8 1.25.0 1.25.1 1.25.2 1.27.1 1.27.2 7.3.13 7.3.15 7.4.1 7.4.1.20425 7.4.1.20439 7.4.3 7.4.3.20679 7.4.5 7.5.1.20813 7.5.1.20833 7.5.3 7.5.5 8.0.1.21160 8.0.1.21164 7.5.7 7.5.9 7.5.11 8.1.7.21585 7.5.13.21586 7.5.13.21598 8.2.1.21612 8.2.1.21650 7.5.15.21611 7.5.17.21680 8.2.3.30119 8.2.4.30130 8.4.0 7.5.19 8.4.1.30298 8.4.2.30317 8.4.1.30307 7.5.20 8.4.3 8.4.4.30419 8.4.4.30467 7.5.21.21732 8.4.5.30483