#VU107969 Path traversal in Allegra - CVE-2025-3486

Vulnerability identifier: #VU107969

Vulnerability risk: Low

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-3486

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Allegra
Server applications / Conferencing, Collaboration and VoIP solutions

Vendor: Steinbeis GmbH & Co. KG

Description

The vulnerability allows a remote user to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences within the implementation of the isZipEntryValide method. A remote administrator can send a specially crafted HTTP request and read arbitrary files on the system, leading to arbitrary code execution.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Allegra: 8.1.0 - 8.1.1

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External links
https://www.zerodayinitiative.com/advisories/ZDI-25-255/
https://alltena.com/en/resources/release-notes/release-notes-for-release-8-1-2

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.