PT-2026-54705 · Cisco · Clamav

David Pokora + 1 · Published 2026-07-01 · Updated 2026-07-02 · CVE-2026-20215

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions ClamAV (affected versions not specified)

Description A flaw in the 7z file format parser allows an unauthenticated remote attacker to cause a Denial of Service (DoS) condition. The issue stems from improper boundary checks for content in 7z files during scanning, which can lead to an out-of-bounds buffer write, causing memory corruption. An attacker can trigger this by submitting a specially crafted 7z file for scanning, which may result in the termination of the ClamAV scanning process.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

BDU:2026-09212

CVE-2026-20215

Affected Products

Clamav

References · 4

• https://bdu.fstec.ru/vul/2026-09212 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-20215 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-88cFYyxR · Vendor Advisory
• https://twitter.com/techepages/status/2072614506300420195 · Twitter Post