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

Vulnerability from cvelistv5 – Published: 2026-04-30 20:17 – Updated: 2026-10-01 15:19 X_Open Source
VLAI
Title
FRRouting < 10.5.3 Integer Overflow in OSPF TLV Parser Functions
Summary
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 (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
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-01 16:36 UTC
CWE
  • CWE-190 - Integer Overflow or Wraparound
  • CWE-125 - Out-of-bounds Read
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6843 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
FRRouting frr Affected: 0 , < 10.5.3 (semver)
    cpe:2.3:a:frrouting:frrouting:*:*:*:*:*:*:*:*
Create a notification for this product.
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
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            {
              "tags": [
                "patch"
              ],
              "url": "https://github.com/FRRouting/frr/commit/f098decf02987fbf1c891766c1516ac832adadfd"
            },
            {
              "tags": [
                "third-party-advisory"
              ],
              "url": "https://www.vulncheck.com/advisories/frrouting-integer-overflow-in-ospf-tlv-parser-functions"
            }
          ],
          "source": {
            "discovery": "UNKNOWN"
          },
          "tags": [
            "x_open-source"
          ],
          "title": "FRRouting \u003c 10.5.3 Integer Overflow in OSPF TLV Parser Functions",
          "x_generator": {
            "engine": "vulncheck"
          }
        }
      },
      "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": "2026-10-01T15:19:54.314Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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