Is CVE-2026-5123 actively exploited?

No active exploitation of CVE-2026-5123 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-5123 be exploited remotely?

Yes. CVE-2026-5123 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-5123?

CVE-2026-5123 has a CVSS score of 3.7 (LOW).

HOME VULNERABILITIESCVE-2026-5123

LOW

CVE-2026-5123

CWE-189Published: March 30, 2026· Updated: Apr 1, 2026

3.7

CVSS v3.1

EPSS:0.05%probability of exploitation in 30 daysPercentile:14.4th

Official Description

A weakness has been identified in osrg GoBGP up to 4.3.0. This impacts the function DecodeFromBytes of the file pkg/packet/bgp/bgp.go. Executing a manipulation of the argument data[1] can lead to off-by-one. The attack may be launched remotely. Attacks of this nature are highly complex. The exploitability is said to be difficult. This patch is called 67c059413470df64bc20801c46f64058e88f800f. A patch should be applied to remediate this issue.

NVD Source

Technical Analysis

CVE-2026-5123 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.