CVE-2021-33177

mediumpriority · track · 39EPSS 0.101 · 96 %ileDEEUUS

grimoire priorityP1 · Urgent

Exploitable?

—

no known exploitation

Likely / severe?

10.1% (96th) EPSS

CVSS 6.5 · medium

Is it mine?

12 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

The Bulk Modifications functionality in Nagios XI versions prior to 5.8.5 is vulnerable to SQL injection. Exploitation requires the malicious actor to be authenticated to the vulnerable system, but once authenticated they would be able to execute arbitrary sql queries.

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

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-89USprimary

affected products (12)

Products and version ranges known to be affected.

Checkmk Checkmkall versionscert_bundDEcpe:/a:tribe29:checkmk:-
Checkmk Checkmk <2.0.0p18all versionscert_bundDE
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Nagios Enterprises Nagios XI <5.8.4all versionscert_bundDE
Nagios Enterprises Nagios XI <5.8.5all versionscert_bundDE
Nagios Enterprises Nagios XI <5.8.6all versionscert_bundDE
Nagios Enterprises Nagios XI< 5.8.4cert_bundDE
Nagios Enterprises Nagios XI< 5.8.5cert_bundDE
Nagios Enterprises Nagios XI< 5.8.6cert_bundDE
Tribe29 Checkmk< 2.0.0p18cert_bundDE
Nagios Nagios XI≤ <5.8.5enisa_euvdEU
nagios nagios xi< 5.8.5nvdUScpe:2.3:a:nagios:nagios_xi:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2025-0911Nagios Enterprises Nagios XI: Mehrere SchwachstellenDeutsch2021-10-14csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Nagios Enterprises Nagios XI ausnutzen, um Dateien zu manipulieren oder einen Cross-Site-Scripting-Angriff durchzuführen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd NVD CVE.org MITRE

published 2021-10-14modified 2026-06-17

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+23869 more

references (4)

External citations — patches, advisories, analysis.

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