CVE-2019-16905 (GCVE-0-2019-16905)

Vulnerability from cvelistv5 – Published: 2019-10-09 00:00 – Updated: 2026-10-14 06:54
VLAI
Summary
OpenSSH 7.7 through 7.9 and 8.x before 8.1, when compiled with an experimental key type, has a pre-authentication integer overflow if a client or server is configured to use a crafted XMSS key. This leads to memory corruption and local code execution because of an error in the XMSS key parsing algorithm. NOTE: the XMSS implementation is considered experimental in all released OpenSSH versions, and there is no supported way to enable it when building portable OpenSSH.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • n/a
Assigner
mitre CNA under the mitre root
CNA scorecard E 28/100 over 2309 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
guessed Create a notification for this product.
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
guessed Create a notification for this product.
Show details on NVD website
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                "value": "CWE-190"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2025-11-21T11:54:26+00:00",
      "cve": "CVE-2019-16905",
      "id": "CVE-2019-16905",
      "initial_release_date": "2019-08-28T00:00:00+00:00",
      "product_status:known_not_affected": "27",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "openssh: an integer overflow in the private key parsing code for the XMSS key type",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2019/cve-2019-16905.json",
      "version": "3"
    }
  }
}



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Sightings

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