HOMEVULNERABILITIESCVE-2025-61909
MEDIUM

CVE-2025-61909

CWE-250Published: October 16, 2025· Updated: Jun 17, 2026

4.4
CVSS v3.1

Official Description

Icinga 2 is an open source monitoring system. From 2.10.0 to before 2.15.1, 2.14.7, and 2.13.13, the safe-reload script (also used during systemctl reload icinga2) and logrotate configuration shipped with Icinga 2 read the PID of the main Icinga 2 process from a PID file writable by the daemon user, but send the signal as the root user. This can allow the Icinga user to send signals to processes it would otherwise not permitted to. A fix is included in the following Icinga 2 versions: 2.15.1, 2.14.7, and 2.13.13.

NVD Source

Technical Analysis

CVE-2025-61909 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 4.4.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.High
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

icinga1 product(s)
icinga
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/Icinga/icinga2/commit/51ec73cbd922a76fc0f60e1d8d33acd7caa5d587
PATCHhttps://github.com/Icinga/icinga2/security/advisories/GHSA-pg6g-g99v-mw46

All References (4)

→
https://github.com/Icinga/icinga2/commit/51ec73cbd922a76fc0f60e1d8d33acd7caa5d587Patch
→
https://github.com/Icinga/icinga2/issues/10527Issue Tracking
→
https://github.com/Icinga/icinga2/security/advisories/GHSA-pg6g-g99v-mw46Patch · Vendor Advisory
→
https://icinga.com/blog/releasing-icinga-2-v2-15-1-2-14-7-and-2-13-13-and-icinga-db-web-v1-2-3-and-1-1-4Release Notes

Quick Facts

CVE IDCVE-2025-61909
CVSS Score4.4 / 10
SeverityMEDIUM
WeaknessCWE-250
CISA KEVNo
Affected1 vendor(s)
PublishedOct 16, 2025

Related CVEs (CWE-250)

CVE-2026-4606
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CVE-2026-50566
9.9
CVE-2024-3330
9.9
CVE-2024-8767
9.9
CVE-2026-44477
9.9
CVE-2026-25212
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Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2025-61909 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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