8.8

CVE-2021-37343: nagios nagios_xi Path Traversal

Modified
Published 13-08-2021Last modified 04-08-2024

Vulnerability summary

CVE-2021-37343 is a high (CVSS 8.8) Path Traversal vulnerability in nagios nagios_xi. EPSS estimates a 23.82% chance of exploitation in the next 30 days, higher than 97.8% of scored vulnerabilities. 3 public exploits are recorded.

Overall risk
50/100
0100
High · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (NVD)
EPSS score
23.82%
0%100%
High · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits3reference, metasploit

Timeline

  1. 13-08-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

A path traversal vulnerability exists in Nagios XI below version 5.8.5 AutoDiscovery component and could lead to post authenticated RCE under security context of the user running Nagios.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

23.82%

Chance of exploitation in the next 30 days

Percentile

98%

Versus all other CVEs

30-day change

No change 0.00 pp

From 23.82% 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

3 found
  • referenceUnverified

    Exploit Reference (packetstormsecurity.com)

    Maturity: unknown

  • MetasploitMetasploitremoteUnverified

    Nagios XI Scanner

    auxiliary/scanner/http/nagios_xi_scanner

    Maturity: poc

  • MetasploitMetasploitremoteVerified

    Nagios XI Autodiscovery Webshell Upload

    exploit/linux/http/nagios_xi_autodiscovery_webshell

    Maturity: weaponized

Weaknesses

CWE · root cause

Affected systems

Nagios1 product

1 vendor · 1 product

References

2 links