CVE catalog

CVE-2026-25833

Mbed TLS 3.5.0 to 3.6.5 fixed in 3.6.6 and 4.1.0 has a buffer overflow in the x509_inet_pton_ipv6() function

Severity: High · CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: Apr 1, 2026, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.31% · Oct 25, 2026

Mbed TLS 3.5.0 to 3.6.5 fixed in 3.6.6 and 4.1.0 has a buffer overflow in the x509_inet_pton_ipv6() function

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	mbedtls	sid	`3.6.7-3`	fixed
Debian	mbedtls	forky	`3.6.7-3`	fixed
Debian	mbedtls	trixie	`3.6.6-0.1~deb13u1`	vulnerable
Debian	mbedtls	bookworm	`2.28.3-1`	vulnerable
Cpe	mbedtls	Not reported	Not reported	vulnerable
Cpe	mbed_tls	Not reported	`3.6.6`	fixed
Cpe	mbed_tls	Not reported	Not reported	unknown
Alpine	mbedtls	3.20	`3.6.6-r0`	fixed
Alpine	mbedtls	3.21	`3.6.6-r0`	fixed
Alpine	mbedtls	3.22	`3.6.6-r0`	fixed
Alpine	mbedtls	3.23	`3.6.6-r0`	fixed
Alpine	mbedtls	3.24	`3.6.6-r0`	fixed
Suse	ovmf	linux enterprise server 16.0	`202502-160000.5.1`	fixed
Suse	ovmf	linux enterprise server for sap applications 16.0	`202502-160000.5.1`	fixed
Opensuse	ovmf	tumbleweed	`202602-9.1`	fixed
Opensuse	mbedtls	tumbleweed	`3.6.6-1.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	mbedtls	source	sid	`3.6.6-0.1`	unimportant	Not reported	[1133841]
Debian	mbedtls	source	forky	`3.6.6-0.1`	unimportant	Not reported	[1133841]
Debian	mbedtls	source	trixie	`(unfixed)`	unimportant	Not reported	[1133841]
Debian	mbedtls	source	bookworm	`(unfixed)`	unimportant	Not reported	[1133841]
Cpe	mbed_tls	cpe	Not reported	`3.6.6`	Not reported	Not reported	Not reported
Alpine	mbedtls	apk	3.20	`3.6.6-r0`	Not reported	ALPINE-CVE-2026-25833	Not reported
Alpine	mbedtls	apk	3.21	`3.6.6-r0`	Not reported	ALPINE-CVE-2026-25833	Not reported
Alpine	mbedtls	apk	3.22	`3.6.6-r0`	Not reported	ALPINE-CVE-2026-25833	Not reported
Alpine	mbedtls	apk	3.23	`3.6.6-r0`	Not reported	ALPINE-CVE-2026-25833	Not reported
Alpine	mbedtls	apk	3.24	`3.6.6-r0`	Not reported	ALPINE-CVE-2026-25833	Not reported
Suse	ovmf	rpm	linux enterprise server 16.0	`202502-160000.5.1`	Not reported	SUSE-SU-2026:22016-1	Not reported
Suse	ovmf	rpm	linux enterprise server for sap applications 16.0	`202502-160000.5.1`	Not reported	SUSE-SU-2026:22016-1	Not reported
Opensuse	ovmf	rpm	tumbleweed	`202602-9.1`	Not reported	OPENSUSE-SU-2026:10615-1	Not reported
Opensuse	mbedtls	rpm	tumbleweed	`3.6.6-1.1`	Not reported	OPENSUSE-SU-2026:10498-1	Not reported

[Debian bug #1133841]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libmbedcrypto7]Affected
Source package: [mbedtls]
Details (2)
- 2.28.3-1 · amd64 · bookworm
  Affected
  nvd · mbedtls · debian · bookworm; nvd · mbedtls · debian · 12
- 2.28.3-1 · arm64 · bookworm
  Affected
  nvd · mbedtls · debian · bookworm; nvd · mbedtls · debian · 12
[libmbedtls14]Affected
Source package: [mbedtls]
Details (2)
- 2.28.3-1 · amd64 · bookworm
  Affected
  nvd · mbedtls · debian · bookworm; nvd · mbedtls · debian · 12
- 2.28.3-1 · arm64 · bookworm
  Affected
  nvd · mbedtls · debian · bookworm; nvd · mbedtls · debian · 12
[libmbedtls-dev]Affected
Source package: [mbedtls]
Details (2)
- 2.28.3-1 · amd64 · bookworm
  Affected
  nvd · mbedtls · debian · bookworm; nvd · mbedtls · debian · 12
- 2.28.3-1 · arm64 · bookworm
  Affected
  nvd · mbedtls · debian · bookworm; nvd · mbedtls · debian · 12
[libmbedtls-doc]Affected
Source package: [mbedtls]
Details (2)
- 2.28.3-1 · all · bookworm
  Affected
  nvd · mbedtls · debian · bookworm; nvd · mbedtls · debian · 12
- 2.28.3-1 · all · bookworm
  Affected
  nvd · mbedtls · debian · bookworm; nvd · mbedtls · debian · 12
[libmbedx509-1]Affected
Source package: [mbedtls]
Details (2)
- 2.28.3-1 · amd64 · bookworm
  Affected
  nvd · mbedtls · debian · bookworm; nvd · mbedtls · debian · 12
- 2.28.3-1 · arm64 · bookworm
  Affected
  nvd · mbedtls · debian · bookworm; nvd · mbedtls · debian · 12

[Debian 13 (Trixie)]

[libmbedcrypto16]Affected
Source package: [mbedtls]
Details (2)
- 3.6.5-0.1~deb13u1 · amd64 · trixie
  Affected
  nvd · mbedtls · debian · 13
- 3.6.5-0.1~deb13u1 · arm64 · trixie
  Affected
  nvd · mbedtls · debian · 13
[libmbedtls21]Affected
Source package: [mbedtls]
Details (2)
- 3.6.5-0.1~deb13u1 · amd64 · trixie
  Affected
  nvd · mbedtls · debian · 13
- 3.6.5-0.1~deb13u1 · arm64 · trixie
  Affected
  nvd · mbedtls · debian · 13
[libmbedtls-dev]Affected
Source package: [mbedtls]
Details (2)
- 3.6.5-0.1~deb13u1 · amd64 · trixie
  Affected
  nvd · mbedtls · debian · 13
- 3.6.5-0.1~deb13u1 · arm64 · trixie
  Affected
  nvd · mbedtls · debian · 13
[libmbedtls-doc]Affected
Source package: [mbedtls]
Details (2)
- 3.6.5-0.1~deb13u1 · all · trixie
  Affected
  nvd · mbedtls · debian · 13
- 3.6.5-0.1~deb13u1 · all · trixie
  Affected
  nvd · mbedtls · debian · 13
[libmbedx509-7]Affected
Source package: [mbedtls]
Details (2)
- 3.6.5-0.1~deb13u1 · amd64 · trixie
  Affected
  nvd · mbedtls · debian · 13
- 3.6.5-0.1~deb13u1 · arm64 · trixie
  Affected
  nvd · mbedtls · debian · 13

[openSUSE Tumbleweed]

[libmbedtls23]Unknown
Source package: [mbedtls]
Details (1)
- 4.2.0-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 3.6.6-1.1
  Version impact unknown
  nvd · mbedtls · opensuse · tumbleweed
[libmbedtls23-x86-64-v3]Unknown
Source package: [mbedtls]
Details (1)
- 4.2.0-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 3.6.6-1.1
  Version impact unknown
  nvd · mbedtls · opensuse · tumbleweed
[libmbedx509-9]Unknown
Source package: [mbedtls]
Details (1)
- 4.2.0-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 3.6.6-1.1
  Version impact unknown
  nvd · mbedtls · opensuse · tumbleweed
[libmbedx509-9-x86-64-v3]Unknown
Source package: [mbedtls]
Details (1)
- 4.2.0-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 3.6.6-1.1
  Version impact unknown
  nvd · mbedtls · opensuse · tumbleweed
[libtfpsacrypto2]Unknown
Source package: [mbedtls]
Details (1)
- 4.2.0-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 3.6.6-1.1
  Version impact unknown
  nvd · mbedtls · opensuse · tumbleweed
[libtfpsacrypto2-x86-64-v3]Unknown
Source package: [mbedtls]
Details (1)
- 4.2.0-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 3.6.6-1.1
  Version impact unknown
  nvd · mbedtls · opensuse · tumbleweed
[mbedtls-devel]Unknown
Source package: [mbedtls]
Details (1)
- 4.2.0-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 3.6.6-1.1
  Version impact unknown
  nvd · mbedtls · opensuse · tumbleweed
[ovmf-tools]Unknown
Source package: [ovmf]
Details (1)
- 202605-3.1 · x86_64 · tumbleweed
  Unknown · Fixed: 202602-9.1
  Version impact unknown
  nvd · ovmf · opensuse · tumbleweed
[qemu-ovmf-x86_64]Unknown
Source package: [ovmf]
Details (1)
- 202605-3.1 · noarch · tumbleweed
  Unknown · Fixed: 202602-9.1
  Version impact unknown
  nvd · ovmf · opensuse · tumbleweed
[qemu-ovmf-x86_64-debug]Unknown
Source package: [ovmf]
Details (1)
- 202605-3.1 · x86_64 · tumbleweed
  Unknown · Fixed: 202602-9.1
  Version impact unknown
  nvd · ovmf · opensuse · tumbleweed

Next results

Observed: Oct 23, 2026, 10:35:53 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]