FRRouting < 10.5.3 Integer Overflow in OSPF TLV Parser Functions_CVE-2026-28532

{
    "lastseen": "",
    "description": "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.",
    "published": "2026-04-30T20:17:51.060Z",
    "modified": "2026-04-30T20:17:51.060Z",
    "type": "cve",
    "title": "FRRouting < 10.5.3 Integer Overflow in OSPF TLV Parser Functions",
    "source": "VulnCheck",
    "references": "https://github.com/FRRouting/frr/releases/tag/frr-10.5.3\nhttps://github.com/FRRouting/frr/pull/21002\nhttps://github.com/FRRouting/frr/commit/f098decf02987fbf1c891766c1516ac832adadfd\nhttps://www.vulncheck.com/advisories/frrouting-integer-overflow-in-ospf-tlv-parser-functions",
    "id": "CVE-2026-28532",
    "bulletinFamily": "",
    "cwe": [
        "CWE-190",
        "CWE-125"
    ],
    "cvelist": null,
    "sourceData": "FRRouting frr 0",
    "sourceHref": "",
    "cvss": {
        "score": 6,
        "severity": "MEDIUM",
        "vector": "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",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
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            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "frr",
    "version": "0",
    "vendor": "FRRouting",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}