CVE-2026-28532
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
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| FRRouting | frr | 0 < 10.5.3 | affected |
Weaknesses
- CWE-190: CWE-190: Integer Overflow or Wraparound
- CWE-125: CWE-125: Out-of-bounds Read
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
- https://github.com/FRRouting/frr/releases/tag/frr-10.5.3
- https://github.com/FRRouting/frr/pull/21002
- https://github.com/FRRouting/frr/commit/f098decf02987fbf1c891766c1516ac832adadfd
- https://www.vulncheck.com/advisories/frrouting-integer-overflow-in-ospf-tlv-parser-functions
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