CVE-2026-37457: n/a
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.
AI Analysis
Technical Summary
This vulnerability exists due to an off-by-one error in the bgp_flowspec_op_decode() function within the bgpd/bgp_flowspec_util.c source file of FRRouting stable/10.0. An attacker can trigger an out-of-bounds write by providing a crafted FlowSpec component, resulting in a Denial of Service condition. The vulnerability is publicly documented as CVE-2026-37457 but lacks a CVSS score and vendor remediation information.
Potential Impact
Successful exploitation of this vulnerability can cause a Denial of Service (DoS) on affected FRRouting instances by triggering an out-of-bounds write. There is no information indicating code execution or data disclosure impacts. No known exploits in the wild have been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider restricting access to the affected service and monitor for unusual behavior related to FlowSpec processing. Avoid processing untrusted FlowSpec components where possible.
CVE-2026-37457: n/a
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability exists due to an off-by-one error in the bgp_flowspec_op_decode() function within the bgpd/bgp_flowspec_util.c source file of FRRouting stable/10.0. An attacker can trigger an out-of-bounds write by providing a crafted FlowSpec component, resulting in a Denial of Service condition. The vulnerability is publicly documented as CVE-2026-37457 but lacks a CVSS score and vendor remediation information.
Potential Impact
Successful exploitation of this vulnerability can cause a Denial of Service (DoS) on affected FRRouting instances by triggering an out-of-bounds write. There is no information indicating code execution or data disclosure impacts. No known exploits in the wild have been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider restricting access to the affected service and monitor for unusual behavior related to FlowSpec processing. Avoid processing untrusted FlowSpec components where possible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-04-06T00:00:00.000Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69f4e81bcbff5d861026ece9
Added to database: 5/1/2026, 5:51:23 PM
Last enriched: 5/1/2026, 6:06:20 PM
Last updated: 5/1/2026, 7:08:42 PM
Views: 4
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