{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:frrouting:frrouting:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "10.5.3"
              }
            ],
            "source": [
              "CPE_RANGE",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "cd39d029a48a1e58929a7f31e7d61a594c2ecb42"
            },
            {
              "fixed": "f098decf02987fbf1c891766c1516ac832adadfd"
            }
          ],
          "repo": "https://github.com/frrouting/frr",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-125",
      "CWE-190"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28532.json"
  },
  "details": "FRRouting before 10.5.3 contains an integer overflow vulnerability in seven OSPF Traffic Engineering and Segment Routing TLV parser functions where a uint16_t accumulator variable truncates uint32_t values returned by the TLV_SIZE() macro, causing the loop termination condition to fail while pointer advancement continues unchecked. Attackers with an established OSPF adjacency can send a crafted LS Update packet with a malicious Type 10 or Type 11 Opaque LSA to trigger out-of-bounds memory reads and crash all affected routers in the OSPF area or autonomous system.",
  "id": "CVE-2026-28532",
  "modified": "2026-07-08T05:38:04.789211843Z",
  "published": "2026-04-30T20:17:51.060Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28532.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/FRRouting/frr/releases/tag/frr-10.5.3"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-28532"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/frrouting-integer-overflow-in-ospf-tlv-parser-functions"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/FRRouting/frr/pull/21002"
    },
    {
      "type": "FIX",
      "url": "https://github.com/FRRouting/frr/commit/f098decf02987fbf1c891766c1516ac832adadfd"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "FRRouting \u003c 10.5.3 Integer Overflow in OSPF TLV Parser Functions"
}