Is CVE-2026-37457 actively exploited?

No active exploitation of CVE-2026-37457 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-37457 be exploited remotely?

Yes. CVE-2026-37457 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-37457?

CVE-2026-37457 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2026-37457

CWE-787Published: May 1, 2026· Updated: May 7, 2026

7.5

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:11.8th

Official 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.

NVD Source

Technical Analysis

CVE-2026-37457 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.