CVE catalog

CVE-2026-25835

Mbed TLS before 3.6.6 and TF-PSA-Crypto before 1.1.0…

[CVE catalog]

Mbed TLS before 3.6.6 and TF-PSA-Crypto before 1.1.0 misuse seeds in a Pseudo-Random Number Generator (PRNG).

Severity: High · CVSS 8.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
Published: Apr 1, 2026, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.17% · Oct 27, 2026

Projects and upstream resources

[mbedtls][Source-reported homepage]

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Version impact has not been established. The original provider fields are retained below.

Provider details and historical evidence

Original provider fields

{
  "package_releases": [
    {
      "name": "mbedtls",
      "status": "fixed",
      "release": "sid",
      "version": "3.6.7-3"
    },
    {
      "name": "mbedtls",
      "status": "fixed",
      "release": "forky",
      "version": "3.6.7-3"
    },
    {
      "name": "mbedtls",
      "status": "fixed",
      "release": "trixie",
      "version": "3.6.6-0.1~deb13u1"
    },
    {
      "name": "mbedtls",
      "status": "vulnerable",
      "release": "bookworm",
      "version": "2.28.3-1"
    }
  ],
  "fixed_versions": [
    {
      "bug": 1133841,
      "name": "mbedtls",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "not yet assigned",
      "fixed_version": "3.6.6-0.1"
    },
    {
      "bug": 1133841,
      "name": "mbedtls",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "not yet assigned",
      "fixed_version": "3.6.6-0.1"
    },
    {
      "bug": 1133841,
      "name": "mbedtls",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "not yet assigned",
      "fixed_version": "3.6.6-0.1~deb13u1"
    },
    {
      "bug": 1133841,
      "name": "mbedtls",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "not yet assigned",
      "fixed_version": ""
    }
  ],
  "distribution_packages": [
    {
      "name": "mbedtls",
      "ecosystem": "cpe",
      "fixed_version": "not yet fixed"
    },
    {
      "name": "mbed_tls",
      "ecosystem": "cpe",
      "fixed_version": "3.6.6"
    },
    {
      "name": "mbed_tls",
      "ecosystem": "cpe",
      "fixed_version": ""
    },
    {
      "name": "tf-psa-crypto",
      "ecosystem": "cpe",
      "fixed_version": "1.1.0"
    },
    {
      "name": "mbedtls",
      "distro": "alpine",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.6.6-r0"
            }
          ]
        }
      ],
      "release": "3.20",
      "versions": [],
      "ecosystem": "apk",
      "fixed_version": "3.6.6-r0",
      "provider_record_id": "ALPINE-CVE-2026-25835"
    },
    {
      "name": "mbedtls",
      "distro": "alpine",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.6.6-r0"
            }
          ]
        }
      ],
      "release": "3.21",
      "versions": [],
      "ecosystem": "apk",
      "fixed_version": "3.6.6-r0",
      "provider_record_id": "ALPINE-CVE-2026-25835"
    },
    {
      "name": "mbedtls",
      "distro": "alpine",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.6.6-r0"
            }
          ]
        }
      ],
      "release": "3.22",
      "versions": [],
      "ecosystem": "apk",
      "fixed_version": "3.6.6-r0",
      "provider_record_id": "ALPINE-CVE-2026-25835"
    },
    {
      "name": "mbedtls",
      "distro": "alpine",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.6.6-r0"
            }
          ]
        }
      ],
      "release": "3.23",
      "versions": [],
      "ecosystem": "apk",
      "fixed_version": "3.6.6-r0",
      "provider_record_id": "ALPINE-CVE-2026-25835"
    },
    {
      "name": "mbedtls",
      "distro": "alpine",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.6.6-r0"
            }
          ]
        }
      ],
      "release": "3.24",
      "versions": [],
      "ecosystem": "apk",
      "fixed_version": "3.6.6-r0",
      "provider_record_id": "ALPINE-CVE-2026-25835"
    }
  ]
}

[Debian bug #1133841]

Publisher notes

[bookworm] mbedtls: Minor issue

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[libmbedcrypto7]Unknown
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]Unknown
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]Unknown
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]Unknown
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]Unknown
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]Unknown
Source package: [mbedtls]
Details (2)
- 3.6.5-0.1~deb13u1 · amd64 · trixie
  Affected · Fixed: 3.6.6-0.1~deb13u1
  nvd · mbedtls · debian · 13
- 3.6.5-0.1~deb13u1 · arm64 · trixie
  Affected · Fixed: 3.6.6-0.1~deb13u1
  nvd · mbedtls · debian · 13
[libmbedtls21]Unknown
Source package: [mbedtls]
Details (2)
- 3.6.5-0.1~deb13u1 · amd64 · trixie
  Affected · Fixed: 3.6.6-0.1~deb13u1
  nvd · mbedtls · debian · 13
- 3.6.5-0.1~deb13u1 · arm64 · trixie
  Affected · Fixed: 3.6.6-0.1~deb13u1
  nvd · mbedtls · debian · 13
[libmbedtls-dev]Unknown
Source package: [mbedtls]
Details (2)
- 3.6.5-0.1~deb13u1 · amd64 · trixie
  Affected · Fixed: 3.6.6-0.1~deb13u1
  nvd · mbedtls · debian · 13
- 3.6.5-0.1~deb13u1 · arm64 · trixie
  Affected · Fixed: 3.6.6-0.1~deb13u1
  nvd · mbedtls · debian · 13
[libmbedtls-doc]Unknown
Source package: [mbedtls]
Details (2)
- 3.6.5-0.1~deb13u1 · all · trixie
  Affected · Fixed: 3.6.6-0.1~deb13u1
  nvd · mbedtls · debian · 13
- 3.6.5-0.1~deb13u1 · all · trixie
  Affected · Fixed: 3.6.6-0.1~deb13u1
  nvd · mbedtls · debian · 13
[libmbedx509-7]Unknown
Source package: [mbedtls]
Details (2)
- 3.6.5-0.1~deb13u1 · amd64 · trixie
  Affected · Fixed: 3.6.6-0.1~deb13u1
  nvd · mbedtls · debian · 13
- 3.6.5-0.1~deb13u1 · arm64 · trixie
  Affected · Fixed: 3.6.6-0.1~deb13u1
  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] · [SUSE security advisories and VEX]