Out-of-bounds Read in Frrouting Frr

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…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (5.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-28532?
CVE-2026-28532 is a medium-severity vulnerability in Frrouting Frr, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2026-04-30.
How severe is CVE-2026-28532?
Medium severity. CVSS v3 base score is 6.5 out of 10.