EUVD-2026-64183Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L
Network-reachable dispatcher requires no authentication; integrity impact is high as unauthenticated PHP execution can manipulate ITSM records; confidentiality is partial since data exposure is bounded by which module pages are present.
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
Lifecycle Timeline
4DescriptionCVE.org
Combodo iTop is a web based IT service management tool. Prior to 3.2.3, authentication bypass allows unauthenticated remote attackers to execute arbitrary PHP files from the env-production directory on a new iTop instance in the production environment. This issue has been fixed in version 3.2.3.
AnalysisAI
Unauthenticated remote PHP file execution in Combodo iTop prior to 3.2.3 allows attackers to invoke arbitrary PHP files from the env-production module directory by sending crafted requests to the exec.php dispatcher, which performed no authentication check before routing to module pages. The flaw is classified as CWE-306 (Missing Authentication for Critical Function) and carries a CVSS 3.1 score of 8.6 (AV:N/AC:L/PR:N/UI:N), indicating zero-friction network exploitation with no credentials required. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network reachability to the iTop web interface and the presence of a new iTop installation with env-production populated (i.e., the setup wizard has completed and modules are compiled into production). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 8.6 is driven by network accessibility, no authentication required, no user interaction, and high integrity impact - all consistent with the description. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade to Combodo iTop 3.2.3 or later, which patches exec.php to enforce per-module authentication endpoint whitelisting. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, conduct a complete inventory of Combodo iTop deployments across your infrastructure and identify all systems running versions prior to 3.2.3; immediately isolate any internet-exposed instances if patching cannot be completed within 4 hours. …
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External POC / Exploit Code
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