CVE-2021-4241

What it is

A vulnerability, which was classified as problematic, was found in phpservermon. Affected is the function setUserLoggedIn of the file src/psm/Service/User.php. The manipulation leads to use of predictable algorithm in random number generator. The exploit has been disclosed to the public and may be used. The name of the patch is bb10a5f3c68527c58073258cb12446782d223bc3. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-213744.

At a glance

Exploitability

Can be exploited from the same network segment with a low-privilege account. Limited direct impact.

Exploit odds

0.9% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2022-11-15 23:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 04:19 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.9% in the next 30 days (EPSS).
• Severity: 2.6 LOW (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2022-11-15 23:15 UTC

Last modified

2026-06-17 04:19 UTC

Exploit probability

0.9% · EPSS, next 30 days

Weakness

CWE-331

Record status

Modified

Affected

• Phpservermonitor PHP Server Monitor

Attack profile CVSS 3.1 · 2.6

Attack vector

Adjacent network

Complexity

High

Privileges needed

Low

User interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2021-4241.md and follow it. Check whether this project is affected by CVE-2021-4241. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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