7.2

CVE-2021-3277: nagios nagios_xi

Modified
Published 07-06-2021Last modified 03-08-2024

Vulnerability summary

CVE-2021-3277 is a high (CVSS 7.2) vulnerability in nagios nagios_xi. EPSS estimates a 54.58% chance of exploitation in the next 30 days, higher than 99% of scored vulnerabilities.

Overall risk
40/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.2/10
010
High · v3.1 (NVD)
EPSS score
54.58%
0%100%
Critical · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 07-06-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

Nagios XI 5.7.5 and earlier allows authenticated admins to upload arbitrary files due to improper validation of the rename functionality in custom-includes component, which leads to remote code execution by uploading php files.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

54.58%

Chance of exploitation in the next 30 days

Percentile

99%

Versus all other CVEs

30-day change

No change 0.00 pp

From 54.58% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Nagios1 product

1 vendor · 1 product

References

1 links