CVE-2026-20216: ClamAV InstallShield File Format Processing Resource Exhaustion Vulnerability
A vulnerability in the InstallShield file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device.
Other sources
ClamAV InstallShield File Format Processing Resource Exhaustion 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-2026-20216?
CVE-2026-20216 has a high severity score of 7.5.
How do I fix CVE-2026-20216?
To address CVE-2026-20216, ensure you update ClamAV to the latest version that contains the security patch.
What type of vulnerability is CVE-2026-20216?
CVE-2026-20216 is a resource exhaustion vulnerability leading to a denial of service (DoS) condition.
Who can exploit CVE-2026-20216?
CVE-2026-20216 can be exploited by an unauthenticated, remote attacker.
Which software is affected by CVE-2026-20216?
CVE-2026-20216 affects the ClamAV software due to its InstallShield file format parser.