9.8

CVE-2021-28122: open5gs

CVSS: 9.8v3.1CriticalModified
Published 10-03-2021Last modified 03-08-2024

Vulnerability summary

CVE-2021-28122 is a critical (CVSS 9.8) vulnerability in open5gs. EPSS estimates a 3.96% chance of exploitation in the next 30 days, higher than 90.3% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
3.96%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Timeline

  1. 10-03-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

A request-validation issue was discovered in Open5GS 2.1.3 through 2.2.x before 2.2.1. The WebUI component allows an unauthenticated user to use a crafted HTTP API request to create, read, update, or delete entries in the subscriber database. For example, new administrative users can be added. The issue occurs because Express is not set up to require authentication.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

3.96%

Chance of exploitation in the next 30 days

Percentile

90%

Versus all other CVEs

30-day change

0.00 pp

From 3.96% on 19-09-2026

19-09-202619-10-2026
EPSS score
3.96%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Open5Gs

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Open5gs1 product

1 vendor · 1 product

References

4 links