CVE-2026-25834

Name
CVE-2026-25834
Description
Mbed TLS v3.3.0 up to 3.6.5 and 4.0.0 allows Algorithm Downgrade.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
cve@mitre.org https://mbed-tls.readthedocs.io/en/latest/security-advisories/
cve@mitre.org https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2026-03-sigalg-injection/

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:* mbed_tls >= 3.3.0 < 3.6.6
cpe:2.3:a:arm:mbed_tls:4.0.0:*:*:*:*:*:*:* mbed_tls == None == 4.0.0

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
mbedtls3 edge-community 3.6.6-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
mbedtls3 3.24-community 3.6.6-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
mbedtls edge-main 3.6.6-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
mbedtls 3.23-main 3.6.6-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
mbedtls 3.22-main 3.6.6-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
mbedtls 3.21-main 3.6.6-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
mbedtls 3.20-main 3.6.6-r0 Natanael Copa <ncopa@alpinelinux.org> fixed