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CVE-2026-12340

🗓️ 25 Jun 2026 19:36:21Reported by Debian Security Bug TrackerType 
debiancve
 debiancve
🔗 security-tracker.debian.org👁 20 Views

CVE-2026-12340 causes an out-of-bounds heap read in certificate verification when the public key is under 65 bytes.

Related
Packages
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-12340
25 Jun 202619:36
–attackerkb
alpinelinux
AlpineLinux
CVE-2026-12340
25 Jun 202619:36
–alpinelinux
anthropic
Anthropic
ANT-2026-87DJGDRB · wolfssl · Heap-buffer-overflow
17 Aug 202617:47
–anthropic
cve
CVE
CVE-2026-12340
25 Jun 202619:36
–cve
cvelist
Cvelist
CVE-2026-12340 Out-of-bounds heap read in SM2/SM3 certificate Subject Key Identifier computation
25 Jun 202619:36
–cvelist
euvd
EUVD
EUVD-2026-39547
25 Jun 202619:36
–euvd
mend
Mend
CVE-2026-12340
25 Jun 202619:36
–mend
nvd
NVD
CVE-2026-12340
25 Jun 202620:17
–nvd
osv_debian
osv_debian
DEBIAN-CVE-2026-12340
25 Jun 202620:17
–osv_debian
osv_jlsec
osv_jlsec
JLSEC-2026-700 Out-of-bounds heap read during SM2/SM3 certificate signature verification
14 Jul 202621:41
–osv_jlsec
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Debian12allwolfssl5.5.4-2+deb12u3wolfssl_5.5.4-2+deb12u3_all.deb
Debian13allwolfssl5.7.2-0.1+deb13u2wolfssl_5.7.2-0.1+deb13u2_all.deb
Debian999allwolfssl5.9.2-1wolfssl_5.9.2-1_all.deb

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25 Jun 2026 19:36Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.17.5
CVSS 46.3
EPSS0.00298
SSVC
20