CVE-2026-25832

low

Assigned by CNA: mitre

Published 2026-09-14 · Modified 2026-09-14

Discuss on Community Propose mitigation

CVSS v3

3.7

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS v4 NEW

—

not yet in upstream

VIR risk

3.7

Description

In Mbed TLS 3.6.x before 3.6.7 and 4.1.x before 4.1.2, the TLS 1.3 client accepts HelloRetryRequest selecting an unadvertised group.

Predictions

Exploit likelihood

47%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

Mitigation details

Source: Debian Security Tracker · View original ↗ · DFSG

CVE-2026-25832 NameCVE-2026-25832 SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) Vulnerable and fixed packages The table below lists information on source packages. Source PackageReleaseVersionStatus mbedtls (PTS)bullseye2.16.9-0.1vulnerable bullseye…

CVE-2026-25832

Name	CVE-2026-25832
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
mbedtls (PTS)	bullseye	2.16.9-0.1	vulnerable
	bullseye (security)	2.16.9-0.1+deb11u4	vulnerable
	bookworm	2.28.3-1	vulnerable
	trixie	3.6.5-0.1~deb13u1	vulnerable
	forky, sid	3.6.7-3	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
mbedtls	source	bookworm	(unfixed)	end-of-life
mbedtls	source	(unstable)	3.6.7-2

Notes

[trixie] - mbedtls <no-dsa> (Minor issue; can be fixed via point releases)
[bookworm] - mbedtls <end-of-life> (EOL in bookworm LTS)

Home - Debian Security - Source (Git)

Apply commands

text fix

Notes

[trixie] - mbedtls <no-dsa> (Minor issue; can be fixed via point releases)[bookworm] - mbedtls <end-of-life> (EOL in bookworm LTS)

OS impact

Debian Mixed 5 releases

Version	Status	Fixed in
trixie	Affected	—
sid	Fixed	`3.6.7-2`
forky	Fixed	`3.6.7-2`
bullseye	Affected	—
bookworm	Affected	—

Alpine Fixed 4 releases

Version	Status	Fixed in
v3.24	Fixed	`4.1.1-r0`
v3.23	Fixed	`3.6.7-r0`
v3.22	Fixed	`3.6.7-r0`
v3.21	Fixed	`3.6.7-r0`

References

CWEs

CWE-669

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.