Ad

CVE-2026-5123

MEDIUM CVSS 4.0: 6.3 EPSS 0.09%
Updated Apr 06, 2026
Osrg
Parameter Value
CVSS 6.3 (MEDIUM)
Affected Versions before 4.4.0
Fixed In 4.4.0
Type CWE-189, CWE-193
Vendor Osrg
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
Low
Partial disruption

CVSS Vector v4.0

Weakness Type (CWE)

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Osrg Gobgp
cpe:2.3:a:osrg:gobgp:*:*:*:*:*:*:*:*
4.4.0