PT-2025-14636 · Os4Ed · Os4Ed Opensis

Published 2025-04-03 · Updated 2025-07-17 · CVE-2025-22927

Positive Technologies (AI Summary)

CVSS v3.1

9.1

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Name of the Vulnerable Software and Affected Versions OS4ED openSIS versions 8.0 through 9.1

Description The issue allows attackers to execute a directory traversal by sending a crafted POST request to "/Modules.php?modname=messaging/Inbox.php&modfunc=save&filename". This enables attackers to potentially access or modify files outside the intended directory.

Recommendations For OS4ED openSIS versions 8.0 through 9.1, consider restricting access to the "/Modules.php?modname=messaging/Inbox.php&modfunc=save&filename" endpoint until a patch is available. As a temporary workaround, avoid using the filename parameter in the affected API endpoint until the issue is resolved.

Exploit

Fix

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2025-22927

Affected Products

Os4Ed Opensis

References · 6

• 🔥 https://github.com/esusalla/vulnerability-research/tree/main/CVE-2025-22927 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-22927 · Security Note
• https://osv.dev/vulnerability/CVE-2025-22927 · Vendor Advisory
• https://github.com/OS4ED/openSIS-Classic · Note
• https://t.me/cvenotify/129329 · Telegram Post
• https://twitter.com/CVEnew/status/1908072057562083368 · Twitter Post