CVE-2026-28532

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 v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/FRRouting/frr/commit/f098decf02987fbf1c891766c1516ac832adadfd	Patch
https://github.com/FRRouting/frr/pull/21002	Issue Tracking Patch
https://github.com/FRRouting/frr/releases/tag/frr-10.5.3	Release Notes
https://www.vulncheck.com/advisories/frrouting-integer-overflow-in-ospf-tlv-parser-functions	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:frrouting:frrouting:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-04-30 21:16

Updated : 2026-06-17 10:28

NVD link : CVE-2026-28532

Mitre link : CVE-2026-28532

CVE.ORG link : CVE-2026-28532

JSON object : View

Products Affected

frrouting

frrouting

CWE

CWE-125

Out-of-bounds Read

CWE-190

Integer Overflow or Wraparound

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