CVE catalog

CVE-2026-5500

wolfSSL's wc_PKCS7_DecodeAuthEnvelopedData() does not…

[CVE catalog]

wolfSSL's wc_PKCS7_DecodeAuthEnvelopedData() does not properly sanitize the AES-GCM authentication tag length received and has no lower bounds check. A man-in-the-middle can therefore truncate the mac field from 16 bytes to 1 byte, reducing the tag check from 2⁻¹²⁸ to 2⁻⁸.

Severity
High · CVSS 8.7
Published
Source
[NVD] · [CVE record]
EPSS
0.48% · Oct 27, 2026

Projects and upstream resources

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": "wolfssl",
      "status": "fixed",
      "release": "sid",
      "version": "5.9.2-1.2"
    },
    {
      "name": "wolfssl",
      "status": "vulnerable",
      "release": "trixie",
      "version": "5.7.2-0.1+deb13u2"
    },
    {
      "name": "wolfssl",
      "status": "vulnerable",
      "release": "bookworm",
      "version": "5.5.4-2+deb12u2"
    },
    {
      "name": "wolfssl",
      "status": "vulnerable",
      "release": "bookworm-security",
      "version": "5.5.4-2+deb12u3"
    }
  ],
  "fixed_versions": [
    {
      "bug": 1133835,
      "name": "wolfssl",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "not yet assigned",
      "fixed_version": "5.9.1-0.1"
    },
    {
      "bug": 1133835,
      "name": "wolfssl",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "not yet assigned",
      "fixed_version": ""
    },
    {
      "bug": 1133835,
      "name": "wolfssl",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "not yet assigned",
      "fixed_version": ""
    }
  ],
  "distribution_packages": [
    {
      "name": "wolfssl",
      "ecosystem": "cpe",
      "fixed_version": "not yet fixed"
    },
    {
      "name": "wolfssl",
      "ecosystem": "cpe",
      "fixed_version": ""
    }
  ]
}

[Debian bug #1133835]

Publisher notes

[trixie] wolfssl: Minor issue [bookworm] wolfssl: Minor issue

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

  • [libwolfssl35]Unknown

    Source package: [wolfssl]

    Details (4)

    • 5.5.4-2+deb12u2 · amd64 · bookworm

      Affected

      nvd · wolfssl · debian · bookworm; nvd · wolfssl · debian · 12

    • 5.5.4-2+deb12u2 · arm64 · bookworm

      Affected

      nvd · wolfssl · debian · bookworm; nvd · wolfssl · debian · 12

    • 5.5.4-2+deb12u3 · amd64 · bookworm-security

      Affected

      nvd · wolfssl · debian · bookworm; nvd · wolfssl · debian · 12

    • 5.5.4-2+deb12u3 · arm64 · bookworm-security

      Affected

      nvd · wolfssl · debian · bookworm; nvd · wolfssl · debian · 12

  • [libwolfssl-dev]Unknown

    Source package: [wolfssl]

    Details (4)

    • 5.5.4-2+deb12u2 · amd64 · bookworm

      Affected

      nvd · wolfssl · debian · bookworm; nvd · wolfssl · debian · 12

    • 5.5.4-2+deb12u2 · arm64 · bookworm

      Affected

      nvd · wolfssl · debian · bookworm; nvd · wolfssl · debian · 12

    • 5.5.4-2+deb12u3 · amd64 · bookworm-security

      Affected

      nvd · wolfssl · debian · bookworm; nvd · wolfssl · debian · 12

    • 5.5.4-2+deb12u3 · arm64 · bookworm-security

      Affected

      nvd · wolfssl · debian · bookworm; nvd · wolfssl · debian · 12

[Debian 13 (Trixie)]

  • [libwolfssl42t64]Unknown

    Source package: [wolfssl]

    Details (2)

    • 5.7.2-0.1+deb13u1 · amd64 · trixie

      Affected

      nvd · wolfssl · debian · 13

    • 5.7.2-0.1+deb13u1 · arm64 · trixie

      Affected

      nvd · wolfssl · debian · 13

  • [libwolfssl-dev]Unknown

    Source package: [wolfssl]

    Details (2)

    • 5.7.2-0.1+deb13u1 · amd64 · trixie

      Affected

      nvd · wolfssl · debian · 13

    • 5.7.2-0.1+deb13u1 · arm64 · trixie

      Affected

      nvd · wolfssl · debian · 13

Observed:

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]