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CVE-2025-61505

Published: Oct 10, 2025Updated: Jan 12, 2026 Sources: CVE List NVDCWE-502
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
0.3%
Top 75.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Workaround Only

Description

e107 CMS thru 2.3.3 are vulnerable to insecure deserialization in the `install.php` script. The script processes user-controlled input in the `previous_steps` POST parameter using `unserialize(base64_decode())` without validation, allowing attackers to craft malicious serialized data. This could lead to remote code execution, arbitrary file operations, or denial of service, depending on available PHP object gadgets in the codebase.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-502

Affected Products

e107e107
On-premWeb App
Web & CMS Plugins / cms-core
n/an/a
e107oss-projectWeb & CMS Pluginsaka e107 cms, e107

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Workaround Available

MITRE ATT&CK

3 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/e107inc/e107/blob/master/install.php
github.com
https://xancatos.org/cve202561505
xancatos.org

Timeline

Published
Oct 10, 2025
Last Updated
Jan 12, 2026

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