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.
History

Mon, 25 Aug 2025 22:15:00 +0000

Type Values Removed Values Added
First Time appeared Adminer
Adminer adminer
Vendors & Products Adminer
Adminer adminer

Mon, 25 Aug 2025 14:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-502
Metrics cvssV3_1

{'score': 8.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 25 Aug 2025 13:30:00 +0000

Type Values Removed Values Added
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.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-08-25T13:39:13.594Z

Reserved: 2025-04-20T00:00:00.000Z

Link: CVE-2025-43960

cve-icon Vulnrichment

Updated: 2025-08-25T13:38:02.697Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-08-25T14:15:30.893

Modified: 2025-08-25T20:24:45.327

Link: CVE-2025-43960

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-08-25T21:53:02Z