Security advisory

{
  "id": "259584ef8ac0e90760eca036bb32dd3e76f586cd511dfa8665fcc10a13749f26",
  "url": "https://osv.dev/vulnerability/CVE-2022-4170",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2022-4170",
    "summary": "The rxvt-unicode package is vulnerable to a remote code execution, in the Perl background extension, when an attacker can control the data written to the user's terminal and certain options are set.",
    "evidence": "osv:CVE-2022-4170",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2022-4170",
      "aliases": [
        "CVE-2022-4170"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/exg/rxvt-unicode",
              "type": "GIT",
              "events": [
                {
                  "introduced": "4cbc689ec6ff9174e2d28c12f5777e224b2c79ba"
                },
                {
                  "last_affected": "963a50ca86662feb39951be3cd601a305aef6a8a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:rxvt-unicode_project:rxvt-unicode:9.25:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "9.25"
                      },
                      {
                        "last_affected": "9.25"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:rxvt-unicode_project:rxvt-unicode:9.26:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "9.26"
                      },
                      {
                        "last_affected": "9.26"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "9.25",
            "9.26",
            "rxvt-unicode-9.26",
            "rxvt-unicode-9.25"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-4170.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.068489744Z",
      "provider": "osv",
      "references": [
        "https://www.openwall.com/lists/oss-security/2022/12/05/1",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/4xxx/CVE-2022-4170.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-4170",
        "https://security.gentoo.org/glsa/202310-20",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2151597"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-74"
        ],
        "cna_assigner": "fedora",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "rxvt-unicode 9.30"
                  },
                  {
                    "last_affected": "rxvt-unicode 9.30"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandaloneSingleVersion"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/4xxx/CVE-2022-4170.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-4170",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 496902,
  "published_at": "2022-12-09T00:00:00+00:00"
}