CVE-2026-28532FRRouting < 10.5.3 Integer Overflow in OSPF TLV Parser Functions
Updated under an hour ago ()
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It affects FRRouting frr and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
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.
- CVSS
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-190, CWE-125
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Analyzed
- Record last updated
- Oct 1, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
FRRouting frr frrouting:frr (from the name) | before 10.5.3 | CNA record |
frrouting frrouting frrouting:frrouting | before 10.5.3 | NVD |
References
- https://github.com/FRRouting/frr/releases/tag/frr-10.5.3release-notes
- https://github.com/FRRouting/frr/pull/21002issue-tracking, patch
- https://github.com/FRRouting/frr/commit/f098decf02987fbf1c891766c1516ac832adadfdpatch
- https://www.vulncheck.com/advisories/frrouting-integer-overflow-in-ospf-tlv-parser-functionsthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.