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CVE-2026-40257: Out-of-bounds Write

🗓️ 06 Jul 2026 00:00:00Reported by Rapid7Type 
rapid7
 rapid7
🔗 www.rapid7.com👁 7 Views

Out-of-bounds Write in OP-TEE 3.21.0-4.11.0 via SHA3 Crypto Extensions causes heap overflow.

Related
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-40257
6 Jul 202616:26
–attackerkb
cve
CVE
CVE-2026-40257
6 Jul 202616:26
–cve
cvelist
Cvelist
CVE-2026-40257 OP-TEE has SHA-3 accelerated finalize heap overflow
6 Jul 202616:26
–cvelist
debiancve
Debian CVE
CVE-2026-40257
6 Jul 202616:26
–debiancve
euvd
EUVD
EUVD-2026-41891
6 Jul 202616:26
–euvd
mend
Mend
CVE-2026-40257
6 Jul 202616:26
–mend
nvd
NVD
CVE-2026-40257
6 Jul 202617:16
–nvd
osv_debian
osv_debian
DEBIAN-CVE-2026-40257
6 Jul 202617:16
–osv_debian
osv_ubuntu
osv_ubuntu
UBUNTU-CVE-2026-40257
6 Jul 202617:16
–osv_ubuntu
ptsecurity
Positive Technologies
PT-2026-55954
6 Jul 202600:00
–ptsecurity
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07 Jul 2026 00:00Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.15.5
EPSS0.00153
SSVC
7