NVD HIGH: CVE-2026-12340 — Out-of-bounds heap read during SM2/SM3 certificate signature verification. When ...
Out-of-bounds heap read during SM2/SM3 certificate signature verification. When parsing a certificate with an SM3wSM2 signature, the Subject Key Identifier computation reads the trailing 65 bytes of the public key without checking that the key is at least that long. A public key shorter than 65 bytes results in an out-of-bounds heap read, leading to a potential crash (denial of service); there is
CVE-2026-12340