CVE-2025-5139
Published: 25 May 2025
Summary
CVE-2025-5139 is a low-severity Injection (CWE-74) vulnerability in Qualitor Qualitor. Its CVSS base score is 2.9 (Low).
Operationally, ranked in the top 12.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
A vulnerability rated critical exists in Qualitor versions 8.20 and 8.24 within the Office 365-type Connection Handler component. Specifically, the file /html/ad/adconexaooffice365/request/testaConexaoOffice365.php accepts unsanitized input to the nmconexao argument, enabling command injection as classified under CWE-74 and CWE-77. The flaw can be reached over the network, though the CVSS 4.0 vector reflects high attack complexity and no required privileges or user interaction.
An unauthenticated remote attacker who can reach the affected endpoint may execute arbitrary operating-system commands by supplying a crafted nmconexao value. Public proof-of-concept code and a demonstration video have been released, confirming that exploitation, while technically demanding, is feasible once the target is identified.
The vendor addresses the issue by releasing Qualitor 8.20.56 and 8.24.31; administrators are advised to apply these updates promptly. The current and peak EPSS scores remain at 0.0327 with no material increase since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-16234
Vulnerability details
A vulnerability was found in Qualitor 8.20/8.24. It has been rated as critical. Affected by this issue is some unknown functionality of the file /html/ad/adconexaooffice365/request/testaConexaoOffice365.php of the component Office 365-type Connection Handler. The manipulation of the argument nmconexao leads to…
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command injection. The attack may be launched remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 8.20.56 and 8.24.31 is able to address this issue. It is recommended to upgrade the affected component.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Developer assessments and testing (including injection-focused techniques) identify improper neutralization of special elements, and the verifiable flaw remediation corrects them pre-deployment.
Identifies indicators of injection attacks (command, SQL, LDAP, etc.) via anomaly and attack monitoring.