Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2026-25834

Improper Certificate Validation

Published: Apr 01, 2026 | Modified: Jun 05, 2026
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
6.5 MODERATE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-25834
CWEhttps://cwe.mitre.org/data/definitions/295.html

Mbed TLS v3.3.0 up to 3.6.5 and 4.0.0 allows Algorithm Downgrade.

Weakness

The product does not validate, or incorrectly validates, a certificate.

Affected Software

NameVendorStart VersionEnd Version
Mbed_tlsTrustedfirmware3.3.0 (including)3.6.6 (excluding)
Mbed_tlsTrustedfirmware4.0.0 (including)4.0.0 (including)
MbedtlsUbuntuesm-apps/xenial*

Potential Mitigations

References

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