6.3

CVE-2026-5124: osrg gobgp Incorrect Privilege Assignment

CVSS: 6.3v4.0MediumAnalyzed
AliasesUBUNTU-CVE-2026-5124DEBIAN-CVE-2026-5124
Published 30-03-2026Last modified 30-03-2026
Open JSON

Vulnerability summary

CVE-2026-5124 is a medium (CVSS 6.3) Incorrect Privilege Assignment vulnerability in osrg gobgp. EPSS estimates a 0.47% chance of exploitation in the next 30 days, higher than 39.3% of scored vulnerabilities.

Overall risk
25/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.3/10
010
Medium · v4.0 (CVE.org)
EPSS score
0.47%
0%100%
Low · +0.18 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 30-03-2026
    PublishedVulnerability first disclosed.
  2. 30-03-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

10 scores · 4 sources · 4 versions

EPSS trend

Probability

0.47%

Chance of exploitation in the next 30 days

Percentile

39%

Versus all other CVEs

30-day change

+0.18 pp

From 0.29% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.47%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • gobgpAll versions (No fix recorded) | < 4.4.0-1
Osrg1 product
  • gobgp4.0 | 4.1 | 4.2 | 4.3.0 | < 4.4.0
Ubuntu1 product
  • gobgpAll versions (No fix recorded)

3 vendors · 3 products

References

9 links