CVE-2025-61505 Deserialization in n/a
Attackers can achieve remote code execution or denial of service in e107 CMS by sending malicious serialized data to the install script.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-61505?
CVE-2025-61505 is a medium-severity unsafe deserialization vulnerability in E107 E107, published on 10 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-502
Which versions are affected by CVE-2025-61505?
It affects 1 product.
Products include E107 E107.
How do I fix CVE-2025-61505?
No fix has been published for CVE-2025-61505 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2025-61505 being exploited?
There is no known exploitation of CVE-2025-61505 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in E107 E107
- CVE-2021-27885 Cross-site request forgery in n/a
- CVE-2016-10753 Deserialization in n/a
- CVE-2018-15901 Cross-site request forgery in n/a
- CVE-2022-50916 e107 CMS v3.2.1 - Upload restriction bypass (Authenticated [Admin])+ Server file override
- CVE-2022-50907 e107 CMS v3.2.1 - Admin Upload Restriction Bypass + RCE
Sources
Also known as GHSA-fh75-ffj9-cpm7.