CVE-2022-29271Network attack vector

Monitoring suppression via read-only downtime scheduling

Published Jun 29, 2022 · Updated Aug 3, 2024

Incorrect authorization in Nagios XI 5.8.5 and earlier allows remote authenticated users to disable monitoring through scheduled downtime. The downtime.php handler accepts crafted POST requests from read-only accounts because its permission check does not enforce downtime-scheduling rights. Read-only Nagios access is sufficient to schedule downtime for any host or service, suppressing all monitoring checks indefinitely.

CVSS severity6.5
Medium
EPSS probability2.00%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Nagios XI 5.8.5 and earlier allows remote authenticated users to disable monitoring through scheduled downtime. The downtime.php handler accepts crafted POST requests from read-only accounts because its permission check does not enforce downtime-scheduling rights. Read-only Nagios access is sufficient to schedule downtime for any host or service, suppressing all monitoring checks indefinitely.

The record

CVE
CVE-2022-29271
Published
Jun 29, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-863, T1562.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 29, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
4.0NIST NVDAV:N/AC:L/Au:S/C:N/I:P/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1562.001Impair Defenses: Disable or Modify Tools

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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