Openssl · Openssl 1.1.1 · CVE-2026-22795
**Name of the Vulnerable Software and Affected Versions**
OpenSSL versions 1.1.1, 3.0, 3.3, 3.4, and 3.5
OpenSSL versions 3.6 through 3.6.0
**Description**
An invalid or NULL pointer dereference can occur in applications processing malformed PKCS#12 files. This can lead to a denial of service when an application attempts to read from an invalid or NULL pointer in memory. The issue stems from a type confusion in the PKCS#12 parsing code, where an ASN1 TYPE union member is accessed without prior type validation, resulting in an invalid pointer read. The vulnerability is constrained to a 1-byte address space, which typically results in a crash due to unmapped memory on modern operating systems. Exploitation requires processing a maliciously crafted PKCS#12 file.
**Recommendations**
OpenSSL version 1.1.1: At the moment, there is no information about a newer version that contains a fix for this vulnerability.
OpenSSL versions 3.0, 3.3, and 3.4: At the moment, there is no information about a newer version that contains a fix for this vulnerability.
OpenSSL versions 3.5 through 3.5.4: Update to version 3.5.5.
OpenSSL versions 3.6 through 3.6.0: Update to version 3.6.1.