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CVE-2026-12340

HIGH · CVSS 7.5 EPSS %0.23 Public Exploit

Kaynak: NVD + CISA KEV + EPSS · Yayınlanma: 2026-06-25T20:17:09.907 · Çekilme zamanı: 2026-06-30T18:34:30.211402+00:00

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Public Exploit Sinyali

Bu CVE için açıklama veya referanslarda public exploit / PoC / GitHub / Metasploit sinyali tespit edildi.

GitHub PoC Linkleri

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CVE
CVE-2026-12340
Severity
HIGH
CVSS
7.5
EPSS
%0.23

Orijinal NVD Açıklaması

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 no out-of-bounds write. Note this only affects builds with SM2 support (--enable-sm2 or --enable-all).