CVE-2026-37457 Details
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.
An off-by-one out-of-bounds write vulnerability has been identified in the bgp_flowspec_op_decode() function of FRRouting (FRR) stable/10.0. This vulnerability allows attackers to cause a denial-of-service by supplying a crafted FlowSpec component. The issue arises from improper bounds checking in the FlowSpec operator array, which can be exploited when more than five chained operators are present.
Users can update to the latest version of FRRouting where this vulnerability has been patched. Instructions for updating can be found in the FRRouting documentation.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 1, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
Affected Products
| Product | Versions |
|---|---|
| frrouting frrouting | 10.0 - |
CPE
Remediation
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Change History
7 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 15, 2026 | CVE Modified | redhat-SADP |
| Jun 30, 2026 | CVE Modified | redhat-SADP |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 17, 2026 | CVE Modified | [email protected] |
| May 29, 2026 | Initial Analysis | [email protected] |
| May 1, 2026 | CVE Modified | CISA-ADP |
| May 1, 2026 | New CVE Received | [email protected] |