CVE-2007-4510: Clam Anti-Virus Clamav

Medium severity, CVSS 4.3. EPSS: 2% chance of exploitation in the next 30 days.

ClamAV before 0.91.2, as used in Kolab Server 2.0 through 2.2beta1 and other products, allows remote attackers to cause a denial of service (application crash) via (1) a crafted RTF file, which triggers a NULL dereference in the cli_scanrtf function in libclamav/rtf.c; or (2) a crafted HTML document with a data: URI, which triggers a NULL dereference in the cli_html_normalise function in libclamav/htmlnorm.c. NOTE: some of these details are obtained from third party information.

Affected products

• Clam Anti-Virus Clamav: up to and including 0.91.2
• Kolab Kolab Server: version 2.0 only; version 2.0.1 only; version 2.0.2 only; version 2.0.3 only; version 2.0.4 only; version 2.1 only; …

Published 2007-08-23. Last modified 2026-06-16.