CVE-2026-25834

MEDIUM 6.5

At a glance

Source: NVD
EPSS: EPSS 0.14 % · percentile 3 (2026-10-28)
State: PUBLISHED
Published: 2026-04-01 00:00 UTC
Updated: 2026-04-01 18:54 UTC
Assigner: mitre
NVD status: Analyzed

Description

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

Weaknesses (CWE)

CWE-295 — Improper Certificate Validation
CWE-327 — Use of a Broken or Risky Cryptographic Algorithm

References

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L	CISA-ADP
CVSS 3.1	MEDIUM 6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L	NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

European references

ENISA EUVD · EUVD-2026-17967
GCVE · GCVE-0-2026-25834

CERT-FR advisories

CERTFR-2026-AVI-0627 — Multiples vulnérabilités dans les produits Splunk · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:trustedfirmware:mbed_tls:*:*:*:*:*:*:*:* ≥ 3.3.0 < 3.6.6
cpe:2.3:a:trustedfirmware:mbed_tls:4.0.0:*:*:*:*:*:*:*

Affected products

Product	Versions
	affected n/a

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD