openssl: OpenSSL: Heap buffer overflow due to signed integer overflow in Unicode output sizing

A flaw was found in OpenSSL. A signed integer overflow vulnerability exists when sizing the destination buffer for Unicode output. This can lead to a heap buffer overflow, which may result in a crash or potentially allow an attacker to execute arbitrary code. Exploitation requires an application ...

PT-2026-47855

Name of the Vulnerable Software and Affected Versions OpenSSL affected versions not specified Description A signed integer overflow occurs when sizing the destination buffer for Unicode output in the ASN1 mbstring ncopy function, which can lead to a heap buffer overflow. This happens in ASN1...

CVE-2026-7383

Issue summary: A signed integer overflow when sizing the destination buffer for Unicode output in ASN1mbstringncopy can lead to a heap buffer overflow. Impact summary: A heap buffer overflow may lead to a crash or possibly attacker controlled code execution or other undefined behaviour. In...