CVE-2025-3486
Published: 22 May 2025
Summary
CVE-2025-3486 is a high-severity Path Traversal (CWE-22) vulnerability in Alltena Allegra. Its CVSS base score is 8.8 (High).
Operationally, ranked in the top 13.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
Allegra contains a directory traversal vulnerability in the isZipEntryValide method that permits remote code execution on affected installations. The flaw stems from insufficient validation of user-supplied paths before they are used in file operations, allowing an authenticated attacker to influence file system access and ultimately execute arbitrary code in the context of the LOCAL SERVICE account. The issue was originally reported as ZDI-CAN-25730 and carries a CVSS 3.1 score of 8.8.
An attacker with valid credentials can send a crafted request that traverses directories and writes or executes malicious content, achieving full control over the application process without user interaction. Because authentication is required, the attack surface is limited to accounts that can reach the vulnerable endpoint, yet the impact remains high due to the resulting code execution privileges.
Vendor release notes for Allegra 8.1.2 and the corresponding Zero Day Initiative advisory ZDI-25-255 address the issue and recommend applying the available update. The associated EPSS score remains low and unchanged at 0.0306, indicating no significant increase in observed exploitation interest since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-16104
Vulnerability details
Allegra isZipEntryValide Directory Traversal Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Allegra. Authentication is required to exploit this vulnerability. The specific flaw exists within the implementation of the isZipEntryValide method.…
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The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of LOCAL SERVICE. Was ZDI-CAN-25730.
- 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.
Validates pathnames and filenames to prevent traversal outside intended directories.