CVE-2025-43960

Description

Adminer 4.8.1, when using Monolog for logging, allows a Denial of Service (memory consumption) via a crafted serialized payload (e.g., using s:1000000000), leading to a PHP Object Injection issue. Remote, unauthenticated attackers can trigger this by sending a malicious serialized object, which forces excessive memory usage, rendering Adminer’s interface unresponsive and causing a server-level DoS. While the server may recover after several minutes, multiple simultaneous requests can cause a complete crash requiring manual intervention.

Category

8.6
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.11%
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/vrana/adminer/compare/v4.8.1...v4.8.2
https://www.adminer.org
https://github.com/Seldaek/monolog
https://github.com/far00t01/CVE-2025-43960

Frequently Asked Questions

What is the severity of CVE-2025-43960?
CVE-2025-43960 has been scored as a high severity vulnerability.
How to fix CVE-2025-43960?
To fix CVE-2025-43960, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-43960 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-43960 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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