CVE-2009-0789: OpenSSL

Medium severity, CVSS 5.0. EPSS: 2.6% chance of exploitation in the next 30 days.

OpenSSL before 0.9.8k on WIN64 and certain other platforms does not properly handle a malformed ASN.1 structure, which allows remote attackers to cause a denial of service (invalid memory access and application crash) by placing this structure in the public key of a certificate, as demonstrated by an RSA public key.

Affected products

• OpenSSL OpenSSL: up to and including 0.9.8j; version 0.9.1c only; version 0.9.2b only; version 0.9.3 only; version 0.9.3a only; version 0.9.4 only; …

Published 2009-03-27. Last modified 2026-06-16.