Vulnerability Description
An off-by-one out-of-bounds write vulnerability in the bgp_flowspec_op_decode() function (bgpd/bgp_flowspec_util.c) of FRRouting (FRR) stable/10.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted FlowSpec component.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Frrouting | Frrouting | 10.0 |
Related Weaknesses (CWE)
References
- https://github.com/FRRouting/frr/commit/0e6882bc72c0278988a47b2f0f73b7a91099a25cPatch
- https://access.redhat.com/errata/RHSA-2026:24340
- https://access.redhat.com/errata/RHSA-2026:24347
- https://access.redhat.com/errata/RHSA-2026:24370
- https://access.redhat.com/errata/RHSA-2026:24371
- https://access.redhat.com/security/cve/CVE-2026-37457
- https://bugzilla.redhat.com/show_bug.cgi?id=2464548
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-37457.json
FAQ
What is CVE-2026-37457?
CVE-2026-37457 is a vulnerability with a CVSS score of 7.5 (HIGH). An off-by-one out-of-bounds write vulnerability in the bgp_flowspec_op_decode() function (bgpd/bgp_flowspec_util.c) of FRRouting (FRR) stable/10.0 allows attackers to cause a Denial of Service (DoS) v...
How severe is CVE-2026-37457?
CVE-2026-37457 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-37457?
Check the references section above for vendor advisories and patch information. Affected products include: Frrouting Frrouting.