CVE-2026-37459
7.5
HIGH
CVSS 3.1
EPSS 0.05%
Description
An integer underflow in FRRouting (FRR) stable/10.0 to stable/10.6 allows attackers to cause a Denial of Service (DoS) via supplying a crafted BGP UPDATE message.
How to fix CVE-2026-37459
No fixed version has been published yet. Mitigate by removing the affected package or applying upstream guidance from the references below.
- Debian/frr—no fix listed
Is CVE-2026-37459 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |