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CVE-2021-21311

high · 7.2Actively exploited

On the CISA Known Exploited Vulnerabilities catalog

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Added 2025-09-29Remediation due 2025-10-20

A public exploit / detection template exists

Weaponised detection is publicly available, which meaningfully raises real-world risk regardless of CVSS. nuclei-templates

Adminer is an open-source database management in a single PHP file. In adminer from version 4.0.0 and before 4.7.9 there is a server-side request forgery vulnerability. Users of Adminer versions bundling all drivers (e.g. `adminer.php`) are affected. This is fixed in version 4.7.9.

7.2
CVSS
90.5%
EPSS (exploit prob.)
100th
EPSS percentile
2021-02-11
Published

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

Weaknesses

CWE-918

Affected products

VendorProductAffected versions
admineradminer>= 4.0.0, < 4.7.9
debiandebian_linux9.0

Check a specific version with /api/v1/cve/match.

References

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2021-21311