Check Point Management Servers RCE Flaw
A remote code execution vulnerability affects multiple Check Point Log Server and Security Management Server versions; patches are available.
Sourcecert.ssi.gouv.fr — open the original
What to check
- Applies to
- The 1 CVE named below. Whether you run an affected version is not assessed: check the versions the source lists.
- Exploitation
- No exploitation in the wild and no public exploit is recorded for the CVEs named.
CERT-FR has issued an advisory for a vulnerability (CVE-2026-91843) affecting several Check Point products, including Log Server, Multi-Domain Log Server, Multi-Domain Security Management Server, and Security Management Server. The flaw allows an attacker to achieve remote arbitrary code execution. Affected versions span releases prior to R81.20 take 28, R82 take 28, R82.10 take 28, and R82.20 take 29.
Check Point has published a security bulletin (sk1000155) with patches for the affected products. As a detection measure, Check Point recommends administrators search SmartConsole Audit and Admin login logs for the pattern "Administrator failed to log in: Username too long," which may indicate exploitation attempts. No confirmation of active in-the-wild exploitation is provided in this advisory, but organizations running affected Check Point management infrastructure should apply the vendor patches promptly given the criticality of these systems to network security operations.
Defenders operating Check Point Security Management Server, Multi-Domain Security Management Server, or Log Server deployments should verify their take/version levels against the advisory, apply the referenced updates, and search historical logs for the indicated failed-login pattern as a compromise indicator.
Mentioned in this report
Detection guidance
Check Point Management Server Process Execution from Network Service
A behavioural hunt for the technique in general, not a signature for the CVEs this report names.
Detects unusual process execution spawned by Check Point management server processes handling network requests, indicative of code execution post-exploitation of CVE-2026-91843. Auto-generated starting point — validate and tune in your environment before deploying. IOC matches can false-positive on shared infrastructure and decay as adversary infrastructure rotates.
title: Check Point Management Server Process Execution from Network Service
description: Detects process creation originating from Check Point management server
service processes (cpd, fwm) that handle external requests, which may indicate remote
code execution following CVE-2026-91843 exploitation.
tags:
- attack.t1190
- attack.execution
logsource:
category: process_creation
product: windows
detection:
selection:
ParentImage|contains:
- cpd.exe
- fwm.exe
ParentCommandLine|contains: Check Point
filter_legitimate_children:
Image|endswith:
- conhost.exe
- cmd.exe
- powershell.exe
filter_system_paths:
Image|startswith:
- C:\Windows\System32\
- C:\Program Files\CheckPoint\
condition: selection and not filter_legitimate_children and not filter_system_paths
falsepositives:
- Check Point administrative tools spawning system processes during normal management
operations
- Legitimate Check Point plugin or extension execution
level: high
id: 2b14249f-9a90-5dc7-b6d8-a6d72ae53977
status: experimental
author: Vorant
Behavioural rules are generated from public reporting — validate in your environment before deploying.
Source reporting: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-1193
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