CVE-2026-37460: Missing input validation in the rfapiRibBi2Ri() function (rfapi_rib.c) of 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.
CSIRTS triage
- What
- Missing input validation in the rfapiRibBi2Ri() function allows for Denial of Service via crafted BGP UPDATE messages.
- Who is affected
- Deployments of FRRouting versions stable/10.0 to stable/10.6 are affected.
- Urgency
- Remediation is urgent due to the high severity of the vulnerability (CVSS 7.5).
- Action
- Update FRRouting to a version beyond stable/10.6.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-37460
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-374600.34% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 26% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-37460 | coverage & exploitation status | NVD · CVE.org |
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