CVE-2025-43960

8.6 highEPSS 0.7%

High (8.6) in adminer adminer. EPSS 0.7% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

8.6 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 54% of CVEs (scores of 2026-10-31)
CWE: CWE-502
Published: 2025-08-25
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

adminer:adminer

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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