VULNERABILITY INTELLIGENCE

CVE-2026-28532

CVSS score6 MEDIUM
EPSS probability0.22%
CISA KEVNot currently listed
Published2026-04-30
Last modified2026-10-26
CVSS vectorCVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

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.

Weakness classification

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

Primary references