CVE catalog

CVE-2025-66442

In Mbed TLS through 4.0.0, there is a compiler-induced timing side channel (in RSA and CBC/ECB decryption) that only occurs with LLVM's select-optimize feature. TF-PSA-Crypto through 1.0.0 is also aff

[CVE catalog]

Severity: Medium · CVSS 5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Published: Jan 1, 2025, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.27% · Oct 25, 2026

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`	vulnerable
Debian	mbedtls	forky	`3.6.7-3`	vulnerable
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	Not reported	unknown
Cpe	tf-psa-crypto	Not reported	Not reported	unknown

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	mbedtls	source	sid	`(unfixed)`	unimportant	Not reported	Not reported
Debian	mbedtls	source	forky	`(unfixed)`	unimportant	Not reported	Not reported
Debian	mbedtls	source	trixie	`(unfixed)`	unimportant	Not reported	Not reported
Debian	mbedtls	source	bookworm	`(unfixed)`	unimportant	Not reported	Not reported

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

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]