{
  "cveId": "CVE-2026-42769",
  "url": "https://patchblox.com/security/cve/CVE-2026-42769",
  "summary": "CVE-2026-42769 is fixed in 14 products on 1 platform, first by libssl3t64 3.5.5-1ubuntu3.2, released June 8, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "openssl: Issue Summary: An error in the callback used to verify the certificate provided in a Root CA key update Certificate M...",
  "description": "Issue Summary: An error in the callback used to verify the certificate provided in a Root CA key update Certificate Management Protocol (CMP) message response rendered the certificate validation ineffectual, which could lead to escalation of credentials from the Registration Authority (RA) level to the root Certification Authority (root CA) level.  Impact Summary: The Registration Autority could replace the root CA certificate for the CMP clients with an arbitrary root CA certificate.  One of the parts of the Certificate Management Protocol (CMP), specified in RFC 9810, is Root Certification Authority (root CA) key Rollover, which is sent by the server in a message with type \u0027id-it-rootCaKeyUpdate\u0027. As part of these messages, \u0027newWithOld\u0027 certificate, the new root CA certificate signed with the old root CA key, is provided, and verifying its signature is crucial for transferring the trust from the old CA key to the new one.  The \u0027id-it-rootCaKeyUpdate\u0027 messages are expected to be processed with OSSL_CMP_get1_rootCaKeyUpdate(), that is expected to verify the \u0027newWithOld\u0027 certificate.  A typo in the certificate chain building code led to adding an incorrect certificate (\u0027newWithOld\u0027 instead of \u0027oldRoot\u0027) to the certificate chain, rendering the certificate verification process ineffectual (only the issuer name and the algorithm OIDs were verified by other parts of the verification code).  An attacker who already has credentials that satisfy the CMP message protection checks can generate a new key pair and use a crafted self-signed certificate in its \u0027id-it-rootCaKeyUpdate\u0027 CMP messages which affected CMP clients would accept as a new trust anchor.  Significant preconditions for the attack (having valid RA-level credentials) are the reason the issue was assigned Low severity.  The FIPS modules are not affected by this issue, as the affected code is outside the OpenSSL FIPS module boundary.",
  "published": "2026-06-08T17:00:00Z",
  "severity": "medium",
  "cvss": 9.1,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
  "epss": 0.00544,
  "epssPercentile": 0.45906,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libssl3t64",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "3.5.3-1ubuntu3.4",
      "fix": "libssl3t64 3.5.3-1ubuntu3.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-libssl3t64-3.5.3-1ubuntu3.4",
      "released": "2026-06-24T14:07:44Z"
    },
    {
      "platform": "linux",
      "product": "libssl3t64",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "3.5.5-1ubuntu3.2",
      "fix": "libssl3t64 3.5.5-1ubuntu3.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libssl3t64-3.5.5-1ubuntu3.2",
      "released": "2026-06-08T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "3.5.6-1~deb13u2",
      "fix": "DEBIAN-CVE-2026-42769",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-42769",
      "released": "2026-06-24T14:07:24Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "Debian 14",
      "fixedVersion": "3.6.3-1",
      "fix": "DEBIAN-CVE-2026-42769",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-42769",
      "released": "2026-06-24T14:07:24Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "RHEL 10",
      "fixedVersion": "3.5.5-4.el10_2",
      "fix": "RHSA-2026:25237",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-25237",
      "released": "2026-06-24T14:09:17Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "RHEL 9",
      "fixedVersion": "1:3.5.5-4.el9_8",
      "fix": "RHSA-2026:25239",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-25239",
      "released": "2026-06-24T14:09:17Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "3.5.3-1ubuntu3.4",
      "fix": "openssl 3.5.3-1ubuntu3.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-openssl-3.5.3-1ubuntu3.4",
      "released": "2026-06-24T14:07:44Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "3.5.5-1ubuntu3.2",
      "fix": "openssl 3.5.5-1ubuntu3.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-openssl-3.5.5-1ubuntu3.2",
      "released": "2026-06-08T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "almalinux 10",
      "fixedVersion": "1:3.5.5-4.el10_2.alma.1",
      "fix": "ALSA-2026:25237",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-25237",
      "released": "2026-06-11T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "almalinux 9",
      "fixedVersion": "1:3.5.5-4.el9_8",
      "fix": "ALSA-2026:25239",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-25239",
      "released": "2026-06-11T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "amzn 2023",
      "fixedVersion": "1:3.5.5-1.amzn2023.0.5",
      "fix": "ALAS2023-2026-1853",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1853",
      "released": "2026-06-22T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "ol 10",
      "fixedVersion": "1:3.5.5-5.0.1.el10_2",
      "fix": "ELSA-2026-25237",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-25237",
      "released": "2026-07-28T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "ol 9",
      "fixedVersion": "1:3.5.5-4.0.1.el9_8",
      "fix": "ELSA-2026-25239",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-25239",
      "released": "2026-06-23T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "rocky 10",
      "fixedVersion": "1:3.5.5-4.el10_2",
      "fix": "RLSA-2026:25237",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-25237",
      "released": "2026-06-13T00:05:06Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "rocky 9",
      "fixedVersion": "1:3.5.5-4.el9_8",
      "fix": "RLSA-2026:25239",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-25239",
      "released": "2026-06-13T00:03:17Z"
    },
    {
      "platform": "linux",
      "product": "openssl-3",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "3.5.0-160000.8.1",
      "fix": "OPENSUSE-SU-2026:21005-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21005-1",
      "released": "2026-06-22T12:26:17Z"
    },
    {
      "platform": "linux",
      "product": "openssl-3",
      "release": "sles 15.7",
      "fixedVersion": "3.2.3-150700.5.36.1",
      "fix": "SUSE-SU-2026:2648-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2648-1",
      "released": "2026-06-26T11:06:32Z"
    },
    {
      "platform": "linux",
      "product": "openssl-3",
      "release": "sles 16.0",
      "fixedVersion": "3.5.0-160000.8.1",
      "fix": "SUSE-SU-2026:22315-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-22315-1",
      "released": "2026-06-22T12:23:46Z"
    },
    {
      "platform": "linux",
      "product": "openssl-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:3.5.5-1.amzn2023.0.5",
      "fix": "ALAS2023-2026-1853",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1853",
      "released": "2026-06-22T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "1:3.5.5-1.amzn2023.0.5",
      "fix": "ALAS2023-2026-1853",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1853",
      "released": "2026-06-22T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-devel",
      "release": "RHEL 9",
      "fixedVersion": "1:3.5.5-4.el9_8",
      "fix": "RHSA-2026:25239",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-25239",
      "released": "2026-06-24T14:09:17Z"
    },
    {
      "platform": "linux",
      "product": "openssl-devel",
      "release": "almalinux 10",
      "fixedVersion": "1:3.5.5-4.el10_2.alma.1",
      "fix": "ALSA-2026:25237",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-25237",
      "released": "2026-06-11T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-devel",
      "release": "almalinux 9",
      "fixedVersion": "1:3.5.5-4.el9_8",
      "fix": "ALSA-2026:25239",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-25239",
      "released": "2026-06-11T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:3.5.5-1.amzn2023.0.5",
      "fix": "ALAS2023-2026-1853",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1853",
      "released": "2026-06-22T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-devel",
      "release": "ol 10",
      "fixedVersion": "1:3.5.5-5.0.1.el10_2",
      "fix": "ELSA-2026-25237",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-25237",
      "released": "2026-07-28T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-devel",
      "release": "ol 9",
      "fixedVersion": "1:3.5.5-4.0.1.el9_8",
      "fix": "ELSA-2026-25239",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-25239",
      "released": "2026-06-23T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-fips-provider-latest",
      "release": "amzn 2023",
      "fixedVersion": "1:3.5.5-1.amzn2023.0.5",
      "fix": "ALAS2023-2026-1853",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1853",
      "released": "2026-06-22T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-fips-provider-latest-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:3.5.5-1.amzn2023.0.5",
      "fix": "ALAS2023-2026-1853",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1853",
      "released": "2026-06-22T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-libs",
      "release": "RHEL 9",
      "fixedVersion": "1:3.5.5-4.el9_8",
      "fix": "RHSA-2026:25239",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-25239",
      "released": "2026-06-24T14:09:17Z"
    },
    {
      "platform": "linux",
      "product": "openssl-libs",
      "release": "almalinux 10",
      "fixedVersion": "1:3.5.5-4.el10_2.alma.1",
      "fix": "ALSA-2026:25237",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-25237",
      "released": "2026-06-11T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-libs",
      "release": "almalinux 9",
      "fixedVersion": "1:3.5.5-4.el9_8",
      "fix": "ALSA-2026:25239",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-25239",
      "released": "2026-06-11T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-libs",
      "release": "amzn 2023",
      "fixedVersion": "1:3.5.5-1.amzn2023.0.5",
      "fix": "ALAS2023-2026-1853",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1853",
      "released": "2026-06-22T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-libs",
      "release": "ol 10",
      "fixedVersion": "1:3.5.5-5.0.1.el10_2",
      "fix": "ELSA-2026-25237",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-25237",
      "released": "2026-07-28T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-libs",
      "release": "ol 9",
      "fixedVersion": "1:3.5.5-4.0.1.el9_8",
      "fix": "ELSA-2026-25239",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-25239",
      "released": "2026-06-23T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-libs-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:3.5.5-1.amzn2023.0.5",
      "fix": "ALAS2023-2026-1853",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1853",
      "released": "2026-06-22T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-perl",
      "release": "RHEL 9",
      "fixedVersion": "1:3.5.5-4.el9_8",
      "fix": "RHSA-2026:25239",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-25239",
      "released": "2026-06-24T14:09:17Z"
    },
    {
      "platform": "linux",
      "product": "openssl-perl",
      "release": "almalinux 10",
      "fixedVersion": "1:3.5.5-4.el10_2.alma.1",
      "fix": "ALSA-2026:25237",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-25237",
      "released": "2026-06-11T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-perl",
      "release": "almalinux 9",
      "fixedVersion": "1:3.5.5-4.el9_8",
      "fix": "ALSA-2026:25239",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-25239",
      "released": "2026-06-11T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-perl",
      "release": "amzn 2023",
      "fixedVersion": "1:3.5.5-1.amzn2023.0.5",
      "fix": "ALAS2023-2026-1853",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1853",
      "released": "2026-06-22T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-perl",
      "release": "ol 10",
      "fixedVersion": "1:3.5.5-5.0.1.el10_2",
      "fix": "ELSA-2026-25237",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-25237",
      "released": "2026-07-28T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-perl",
      "release": "ol 9",
      "fixedVersion": "1:3.5.5-4.0.1.el9_8",
      "fix": "ELSA-2026-25239",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-25239",
      "released": "2026-06-23T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-provider-legacy",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "3.5.3-1ubuntu3.4",
      "fix": "openssl-provider-legacy 3.5.3-1ubuntu3.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-openssl-provider-legacy-3.5.3-1ubuntu3.4",
      "released": "2026-06-24T14:07:44Z"
    },
    {
      "platform": "linux",
      "product": "openssl-provider-legacy",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "3.5.5-1ubuntu3.2",
      "fix": "openssl-provider-legacy 3.5.5-1ubuntu3.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-openssl-provider-legacy-3.5.5-1ubuntu3.2",
      "released": "2026-06-08T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-snapsafe-libs",
      "release": "amzn 2023",
      "fixedVersion": "1:3.5.5-1.amzn2023.0.5",
      "fix": "ALAS2023-2026-1853",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1853",
      "released": "2026-06-22T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-snapsafe-libs-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:3.5.5-1.amzn2023.0.5",
      "fix": "ALAS2023-2026-1853",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1853",
      "released": "2026-06-22T09:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}