CVE-2026-5123

MEDIUM EPSS 32.7%
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 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.

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:N/VA:L/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
32.7% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 2

CWE-189
CWE-193

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/67c059413470df64bc20801c46f64058e88f800f
    Patch
  • github.com https://github.com/osrg/gobgp/pull/3342
    Issue Tracking
  • vuldb.com https://vuldb.com/submit/780179
    Third Party AdvisoryVDB Entry
  • vuldb.com https://vuldb.com/vuln/354155
    Third Party AdvisoryVDB Entry
  • vuldb.com https://vuldb.com/vuln/354155/cti
    Permissions RequiredVDB Entry

Remediation

  • github.com https://github.com/osrg/gobgp/commit/67c059413470df64bc20801c46f64058e88f800f
    Patch