CVE-2025-39666Disclosure(checkmk / checkmk)

LOWCVSS 7.3 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

Patch checkmk checkmk systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Local privilege escalation in Checkmk 2.2.0 (EOL), Checkmk 2.3.0 before 2.3.0p46, Checkmk 2.4.0 before 2.4.0p25, and Checkmk 2.5.0 (beta) before 2.5.0b3 allows a site user to escalate their privileges to root, by manipulating files in the site context that are processed when the `omd` administrative command is run by root.

checkmk CVEs Back to dashboard

0.5/ 10 priority

Sources & remediation

Vendor / third-party advisories

https://checkmk.com/werk/18891

Weakness type (CWE)

CWE-426CWE-829

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

checkmk

Threat summary

Patch or workaround signal is available
4 mentions across 3 observed days
Momentum state: stable

What's happening

Patch or workaround mentioned in 1 signal
Technical details provided in 4 signals
Disclosure: 4 classified signals
Peaked 2d ago at 2 mentions (2026-04-07); latest day: 1
4 total mentions across 3 days

Affected systems

Vendors

checkmk

Products

checkmk

4 versions affected across 1 product

Deep dive

Activity timeline4 mentions / 3d

Signal classification1 categories

Disclosure

4100.0%

Referenced assets4 URLs

By indicator

Classification over time

Date	Total	Labels

2026-04-07	2	Disclosure2
2026-04-11	1	Disclosure1
2026-04-19	1	Disclosure1

Full discourse4 posts

Misbar | مسبار@MisbarSec181d
Disclosure
📌 تصعيد امتيازات حرج في Checkmk تم اكتشاف ثغرة أمنية حرجة في منصة المراقبة Checkmk، تتيح للمستخدمين المحليين الاستيلاء الكامل على النظام المضيف. تم تتبع الثغرة، التي تم تحديدها بـ CVE-2025-39666، كآلية لتصعيد الامتيازات، مما يعرض الأنظمة المتأثرة لخطر الاختراق الشامل. يفتح هذا العيب الباب أمام استغلال محلي محتمل للتحكم بالنظام، مما يستدعي إجراءات تصحيحية فورية. — يُنصح بـ تطبيق التحديثات الأمنية المتاحة لتخفيف المخاطر. 🔗 للمزيد: https://securityonline.info/checkmk-cve-2025-39666-omd-privilege-escalation/
Post summary
The announcement details a critical local privilege escalation vulnerability (CVE-2025-39666) in Checkmk, recommends urgent patching, and lacks evidence of exploit availability or active use.
00050652
256 followersView on X
CVE@CVEnew173d
Disclosure
CVE-2025-39666 Local privilege escalation in Checkmk 2.2.0 (EOL), Checkmk 2.3.0 before 2.3.0p46, Checkmk 2.4.0 before 2.4.0p25, and Checkmk 2.5.0 (beta) before 2.5.0b3 allows a site… https://www.cve.org/CVERecord?id=CVE-2025-39666
Post summary
A local privilege escalation vulnerability (CVE-2025-39666) affecting multiple Checkmk versions is disclosed, providing affected releases but no PoC, exploit, or mitigation details.
00010257
57.2K followersView on X
Vulmon Vulnerability Feed@VulmonFeeds185d
Disclosure
CVE-2025-39666 Local Privilege Escalation in Checkmk 2.2.0 Through 2.5.0 via omd Command Manipulation https://vulmon.com/vulnerabilitydetails?qid=CVE-2025-39666
Post summary
CVE-2025-39666 is a local privilege escalation vulnerability in Checkmk versions 2.2.0 through 2.5.0, caused by omd command manipulation. The post provides technical details but no PoC, exploit code, active exploitation evidence, or patch information.
0000087
4.0K followersView on X
0day Signal@0dayPublishing185d
Disclosure
🚨 CVE-2025-39666: omd: Local privilege escalation ... Site users can drop malicious files that get processed when admins run `omd` - classic file manipulation privesc with a... https://zerodaysignal.com/vulnerability/CVE-2025-39666 #netsec #vulnerability #CVE #sysadmin #zeroday
Post summary
CVE-2025-39666 is a local privilege escalation vulnerability in omd that occurs when users drop malicious files processed by admins running omd, as described on zerodaysignal.com.
00000228
204 followersView on X

CPE platform detail142 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

142 of 142 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.2.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.3.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.4.0	-	-
App	checkmk	checkmk	2.5.0	-	-
App	checkmk	checkmk	2.5.0	-	-

Explore more

Back to dashboard checkmk CVEs checkmk vulnerabilities

What researchers are saying

CVE-2025-39666

Misbar | مسبار[verified]@MisbarSecDisclosure

The announcement details a critical local privilege escalation vulnerability (CVE-2025-39666) in Checkmk, recommends urgent patching, and lacks evidence of exploit availability or active use.

CVE@CVEnewDisclosure

A local privilege escalation vulnerability (CVE-2025-39666) affecting multiple Checkmk versions is disclosed, providing affected releases but no PoC, exploit, or mitigation details.

Vulmon Vulnerability Feed@VulmonFeedsDisclosure

CVE-2025-39666 is a local privilege escalation vulnerability in Checkmk versions 2.2.0 through 2.5.0, caused by omd command manipulation. The post provides technical details but no PoC, exploit code, active exploitation evidence, or patch information.

0day Signal@0dayPublishingDisclosure

CVE-2025-39666 is a local privilege escalation vulnerability in omd that occurs when users drop malicious files processed by admins running omd, as described on zerodaysignal.com.