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CVE-2021-21311: Adminer Server-Side Request Forgery Vulnerability
Adminer Adminer · in CISA KEV since 2025-09-29
2025-09-29added to KEV
2025-10-20federal remediation due date
90.46%EPSS exploit probability (30 days) 99.8th percentile
7.2 HIGHCVSS 3.1
Unknownknown ransomware use
1,691days from NVD publication to KEV
What it is
Adminer contains a server-side request forgery vulnerability that, when exploited, allows a remote attacker to obtain potentially sensitive information.
Required action (CISA)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
| CWE | CWE-918 |
|---|---|
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
| NVD published | 2021-02-11 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2021-21311.json · all KEV CVEs
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Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.