Vulnerability-Lookup

GHSA-WJC3-2QJV-C8FP

Vulnerability from github – Published: 2026-04-30 21:30 – Updated: 2026-04-30 21:30

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.

Severity ?

6.5 (Medium)


                  
                    CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

6.0 (Medium)


                  
                    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

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-28532"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-30T21:16:31Z",
    "severity": "MODERATE"
  },
  "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": "GHSA-wjc3-2qjv-c8fp",
  "modified": "2026-04-30T21:30:37Z",
  "published": "2026-04-30T21:30:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-28532"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FRRouting/frr/pull/21002"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FRRouting/frr/commit/f098decf02987fbf1c891766c1516ac832adadfd"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FRRouting/frr/releases/tag/frr-10.5.3"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/frrouting-integer-overflow-in-ospf-tlv-parser-functions"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-28532 (GCVE-0-2026-28532)

Vulnerability from cvelistv5 – Published: 2026-04-30 20:17 – Updated: 2026-05-01 19:46 X_Open Source

Title

FRRouting < 10.5.3 Integer Overflow in OSPF TLV Parser Functions

Summary

Severity ?

6 (Medium)


                        
                          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

6.5 (Medium)


                        
                          CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-190 - Integer Overflow or Wraparound
CWE-125 - Out-of-bounds Read

Assigner

VulnCheck

References

URL

Tags

	https://github.com/FRRouting/frr/releases/tag/frr…	release-notes
	https://github.com/FRRouting/frr/pull/21002	issue-tracking
	https://github.com/FRRouting/frr/commit/f098decf0…	patch
	https://www.vulncheck.com/advisories/frrouting-in…	third-party-advisory

Impacted products

	Vendor	Product	Version
	FRRouting	frr	Affected: 0 , ≤ 10.5.3 (semver)

Date Public ?

2026-03-05 00:00

Credits

Kazuma Matsumoto, a security researcher at GMO Cybersecurity by IERAE, Inc. VulnCheck

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-28532",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-01T16:36:13.274707Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
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        "providerMetadata": {
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          "shortName": "CISA-ADP"
        },
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      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "affected",
          "product": "frr",
          "vendor": "FRRouting",
          "versions": [
            {
              "lessThanOrEqual": "10.5.3",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
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          "type": "finder",
          "value": "Kazuma Matsumoto, a security researcher at GMO Cybersecurity by IERAE, Inc."
        },
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          "type": "finder",
          "value": "VulnCheck"
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        }
      ],
      "metrics": [
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            "Recovery": "NOT_DEFINED",
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            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
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            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
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            "attackVector": "ADJACENT_NETWORK",
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              "description": "CWE-125: Out-of-bounds Read",
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              "type": "CWE"
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          ]
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      ],
      "providerMetadata": {
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      "references": [
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          "tags": [
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          "url": "https://github.com/FRRouting/frr/releases/tag/frr-10.5.3"
        },
        {
          "tags": [
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          ],
          "url": "https://github.com/FRRouting/frr/pull/21002"
        },
        {
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          "url": "https://github.com/FRRouting/frr/commit/f098decf02987fbf1c891766c1516ac832adadfd"
        },
        {
          "tags": [
            "third-party-advisory"
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          "url": "https://www.vulncheck.com/advisories/frrouting-integer-overflow-in-ospf-tlv-parser-functions"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
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      "tags": [
        "x_open-source"
      ],
      "title": "FRRouting \u003c 10.5.3 Integer Overflow in OSPF TLV Parser Functions",
      "x_generator": {
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  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-28532",
    "datePublished": "2026-04-30T20:17:51.060Z",
    "dateReserved": "2026-02-27T21:07:55.469Z",
    "dateUpdated": "2026-05-01T19:46:14.169Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-WJC3-2QJV-C8FP

CVE-2026-28532 (GCVE-0-2026-28532)

Tags

Sightings

Nomenclature