firewalld — security advisory

{
  "id": "d78da9f153a838756ea275f8c24bdeba9cbd87e81609aae02743384e8668a0d1",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-4948",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2026-4948",
    "summary": "A flaw was found in firewalld. A local unprivileged user can exploit this vulnerability by mis-authorizing two runtime D-Bus (Desktop Bus) setters, setZoneSettings2 and setPolicySettings. This mis-authorization allows the user to modify the runtime firewall state without proper authentication, leading to unauthorized changes in network security configurations.",
    "evidence": "osv:DEBIAN-CVE-2026-4948",
    "products": [
      {
        "name": {
          "value": "firewalld",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.3.3-1~deb12u2",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "1.3.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.3.1-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.3.2-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.3.3-1~deb12u1",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "firewalld",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.3.1-1+deb13u1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "2.3.1-1",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "firewalld",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.4.0-2",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "2.3.1-1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.3.1-2",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.3.1-3",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.4.0-1",
            "evidence": "/affected/2/versions"
          }
        ]
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "DEBIAN-CVE-2026-4948",
      "aliases": [
        "DEBIAN-CVE-2026-4948"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.3.3-1~deb12u2"
                }
              ]
            }
          ],
          "package": {
            "name": "firewalld",
            "purl": "pkg:deb/debian/firewalld?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "versions": [
            "1.3.0-1",
            "1.3.1-1",
            "1.3.2-1",
            "1.3.3-1~deb12u1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-4948.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.3.1-1+deb13u1"
                }
              ]
            }
          ],
          "package": {
            "name": "firewalld",
            "purl": "pkg:deb/debian/firewalld?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "versions": [
            "2.3.1-1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-4948.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.4.0-2"
                }
              ]
            }
          ],
          "package": {
            "name": "firewalld",
            "purl": "pkg:deb/debian/firewalld?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "versions": [
            "2.3.1-1",
            "2.3.1-2",
            "2.3.1-3",
            "2.4.0-1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-4948.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-07T09:47:38.460582705Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-4948"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2026-4948"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-4948",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 94675,
  "published_at": "2026-03-27T06:16:39.543+00:00"
}