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CVE-2020-28907: nagios fusion Improper Certificate Validation

CVSS: 10.0v2.0HighModified
Published 24-05-2021Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-28907 is a high (CVSS 10.0) Improper Certificate Validation vulnerability in nagios fusion. EPSS estimates a 4.50% chance of exploitation in the next 30 days, higher than 91.4% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
90/100
0100
Critical · default modelHow is this calculated?
CVSS score
10.0/10
010
High · v2.0 (NVD)
EPSS score
4.50%
0%100%
Low · +1.08 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 24-05-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

Incorrect SSL certificate validation in Nagios Fusion 4.1.8 and earlier allows for Escalation of Privileges or Code Execution as root via vectors related to download of an untrusted update package in upgrade_to_latest.sh.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

4.50%

Chance of exploitation in the next 30 days

Percentile

91%

Versus all other CVEs

30-day change

+1.08 pp

From 3.41% on 21-09-2026

21-09-202621-10-2026
EPSS score
4.50%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (skylightcyber.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Nagios1 product

1 vendor · 1 product

References

3 links