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CVE-2026-12340

🗓️ 25 Jun 2026 20:17:00Reported by ubuntu.comType 
ubuntucve
 ubuntucve
🔗 ubuntu.com👁 3 Views

Out-of-bounds heap read during SM2/SM3 certificate signature verification.When parsing a certificate with an SM3wSM2 signature, the Subject KeyIdentifier computation reads the trailing 65 bytes of the public keywithout checking that the key is at ...

Related
Packages
Refs
ReporterTitlePublishedViews
Family
attackerkb
CVE-2026-12340
25 Jun 202619:36
attackerkb
alpinelinux
CVE-2026-12340
25 Jun 202619:36
alpinelinux
cve
CVE-2026-12340
25 Jun 202619:36
cve
cvelist
CVE-2026-12340 Out-of-bounds heap read in SM2/SM3 certificate Subject Key Identifier computation
25 Jun 202619:36
cvelist
euvd
EUVD-2026-39547
25 Jun 202619:36
euvd
nvd
CVE-2026-12340
25 Jun 202620:17
nvd
osv
CVE-2026-12340 Out-of-bounds heap read in SM2/SM3 certificate Subject Key Identifier computation
25 Jun 202619:36
osv
osv
JLSEC-2026-700 Out-of-bounds heap read during SM2/SM3 certificate signature verification. When parsing a...
14 Jul 202621:41
osv
osv
UBUNTU-CVE-2026-12340
25 Jun 202620:17
osv
ptsecurity
PT-2026-52564
25 Jun 202600:00
ptsecurity
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Ubuntu18.04allwolfssl0wolfssl_0_all.deb
Ubuntu20.04allwolfssl0wolfssl_0_all.deb
Ubuntu22.04allwolfssl0wolfssl_0_all.deb
Ubuntu24.04allwolfssl0wolfssl_0_all.deb
Ubuntu26.04allwolfssl0wolfssl_0_all.deb

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29 Jun 2026 21:41Current
6.1Medium risk
Vulners AI Score6.1
CVSS 3.17.5
CVSS 46.3
EPSS0.00226
SSVC
3