Home/CVE/A security vulnerability has been detected in osrg GoBGP up to 4.3.0. Affected is the function BGPHeader.DecodeFromBytes
CVE

CVE-2026-5124

A security vulnerability has been detected in osrg GoBGP up to 4.3.0. Affected is the function BGPHeader.DecodeFromBytes

A security vulnerability has been detected in osrg GoBGP up to 4.3.0. Affected is the function BGPHeader.DecodeFromBytes of the file pkg/packet/bgp/bgp.go of the component BGP Header Handler. The manipulation leads to improper access controls.

Remote exploitation of the attack is possible. The attack is considered to have high complexity. The exploitability is told to be difficult.

The identifier of the patch is f0f24a2a901cbf159260698211ab15c583ced131. To fix this issue, it is recommended to deploy a patch.

LOW · CVSS 3.7 EPSS 0.00059
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-266Incorrect Privilege Assignment
CWE-284Improper Access Control
▤

Affected Products & Versions

1
osrg gobgp< 4.4.0
▣

Scoring & Timeline

3.7
LOW · CVSS v3.1 · cna@vuldb.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD30 Mar 2026 · 05:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

6
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/osrg/gobgp/Product
https://github.com/osrg/gobgp/commit/f0f24a2a901cbf159260698211ab15c583ced131Patch
https://github.com/osrg/gobgp/pull/3340Issue Tracking
https://vuldb.com/submit/780189Third Party AdvisoryVDB Entry
https://vuldb.com/vuln/354156Third Party AdvisoryVDB Entry
https://vuldb.com/vuln/354156/ctiPermissions RequiredVDB Entry
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