CVE-2025-22926Public exploitNetwork attack vector

Arbitrary file read via Inbox filename traversal

Published Apr 3, 2025 · Updated Apr 10, 2025

Path traversal in OS4ED openSIS 8.0 through 9.1 allows remote authenticated users to read arbitrary host files via a crafted POST request. The messaging Inbox.php save action accepts the filename parameter and retrieves the referenced file without neutralizing ../ path segments. Any authenticated role, including student, teacher, or administrator, can retrieve files readable by the web-server account.

CVSS severity9.8
Critical
EPSS probability0.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in OS4ED openSIS 8.0 through 9.1 allows remote authenticated users to read arbitrary host files via a crafted POST request. The messaging Inbox.php save action accepts the filename parameter and retrieves the referenced file without neutralizing ../ path segments. Any authenticated role, including student, teacher, or administrator, can retrieve files readable by the web-server account.

The record

CVE
CVE-2025-22926
Published
Apr 3, 2025
Updated
Apr 10, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-22, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 3, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 10, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1005Data from Local System

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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