CVE-2021-37343

mediumpriority · attend · 53EPSS 0.238 · 98 %ileexploit · weaponizedEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

2 exploits · weaponized

Likely / severe?

23.8% (98th) EPSS

CVSS 6.5 · medium

Is it mine?

2 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

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

Technical severity, 0–10. One row per scoring source.

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.5–8.8

v2.06.5mediumAV:N/AC:L/Au:S/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8 · impact 6.4

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.18.6highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Fsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-22USprimary

exploits (2)

Public proof-of-concept and weaponised exploit code.

exploit/linux/http/nagios_xi_autodiscovery_webshellNagios XI Autodiscovery Webshell Uploadweaponized · metasploit
auxiliary/scanner/http/nagios_xi_scannerNagios XI Scannerfunctional · metasploit

affected products (2)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
nagios nagios xi< 5.8.5nvdUScpe:2.3:a:nagios:nagios_xi:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2021-08-13modified 2026-06-17

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Related entries.

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+12523 more

references (8)

External citations — patches, advisories, analysis.

scry

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