CVE-2026-20217: ClamAV PESpin File Format Processing Out-of-Bounds Memory Corruption Vulnerability
A vulnerability in the PESpin 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.
Other sources
ClamAV PESpin File Format Processing Out-of-Bounds Memory Corruption Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/clamavto a version that resolves this vulnerability.Fixed in 1.4.5+dfsg-2 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 1.5.3-1
Event History
Frequently Asked Questions
What is the severity of CVE-2026-20217?
The severity of CVE-2026-20217 is rated high with a CVSS score of 7.5.
How do I fix CVE-2026-20217?
To fix CVE-2026-20217, update ClamAV to the latest version that addresses this vulnerability.
What type of impact does CVE-2026-20217 have?
CVE-2026-20217 can lead to a denial of service (DoS) condition and potentially other impacts from memory corruption.
Can CVE-2026-20217 be exploited remotely?
Yes, CVE-2026-20217 can be exploited by an unauthenticated, remote attacker.
What component of ClamAV is affected by CVE-2026-20217?
CVE-2026-20217 affects the PESpin file format parser within ClamAV.