Integer Overflow or Wraparound Affecting frrouting/frr package, versions [,10.5.3)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-UNMANAGED-FRROUTINGFRR-16345365
- published3 May 2026
- disclosed30 Apr 2026
- creditKazuma Matsumoto
Introduced: 30 Apr 2026
CVE-2026-28532 (opens in a new tab)How to fix?
Upgrade frrouting/frr to version 10.5.3 or higher.
Overview
Affected versions of this package are vulnerable to Integer Overflow or Wraparound via the OSPF TLV parser functions. An attacker can cause affected routers to crash by sending specially crafted LS Update packets containing malicious Type 10 or Type 11 Opaque LSAs after establishing an OSPF adjacency. This is only exploitable if the attacker has an active OSPF peering relationship with the target router.