CVE-2026-5122

MEDIUM EPSS 21.0%
Published Mar 30, 20263mo ago · Modified Jun 17, 20261w ago
6.3 CVSS 4.0
Medium
Find Similar
Published Mar 30, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago

Description

A security flaw has been discovered in osrg GoBGP up to 4.3.0. This affects the function DecodeFromBytes of the file pkg/packet/bgp/bgp.go of the component BGP OPEN Message Handler. Performing a manipulation of the argument domainNameLen results in improper access controls. The attack may be initiated remotely. A high degree of complexity is needed for the attack. The exploitability is reported as difficult. The patch is named 2b09db390a3d455808363c53e409afe6b1b86d2d. It is suggested to install a patch to address this issue.

CVSS Details

Base Score
6.3
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
21.0% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 2

CWE-266
CWE-284

Affected Products 1

VendorProductVersionRange
osrggobgp* <4.4.0

References 6

  • github.com https://github.com/osrg/gobgp/
    Product
  • github.com https://github.com/osrg/gobgp/commit/2b09db390a3d455808363c53e409afe6b1b86d2d
    Patch
  • github.com https://github.com/osrg/gobgp/pull/3343
    Issue Tracking
  • vuldb.com https://vuldb.com/submit/780124
    Third Party AdvisoryVDB Entry
  • vuldb.com https://vuldb.com/vuln/354154
    Third Party AdvisoryVDB Entry
  • vuldb.com https://vuldb.com/vuln/354154/cti
    Permissions RequiredVDB Entry

Remediation

  • github.com https://github.com/osrg/gobgp/commit/2b09db390a3d455808363c53e409afe6b1b86d2d
    Patch