CVE-2025-43960

Severity: high (CVSS 8.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-08-25 · updated 2026-06-17
Weakness: CWE-502

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.

Affected products

vrana adminer: 4.8.1

References

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

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