CSIRTS // UNIFIED SECURITY ADVISORY FEEDSYS ● ONLINE · POWERED BY INTELFUSIONS.COM

← Back to feed

CVE-2021-21311: Adminer Server-Side Request Forgery Vulnerability

criticalknown exploitedpublic exploitCVE-2021-21311
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Adminer contains a server-side request forgery vulnerability that, when exploited, allows a remote attacker to obtain potentially sensitive information.

CSIRTS triage

vendor: Adminerproduct: AdminerServer-side request forgery
What
The vulnerability allows remote attackers to obtain potentially sensitive information via server-side request forgery.
Who is affected
Users of Adminer applications.
Urgency
Immediate action is required due to active exploitation and critical severity.
Action
Update Adminer to the latest version.

AI-assisted analysis generated from the source advisory — verify against the original.

⚡ Watch Adminer

Get an email when a new Adminer advisory drops — max one per day, one-click unsubscribe.

Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2025-09-29
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2021-21311

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2021-21311coverage & exploitation statusNVD · CVE.org

More from CISA Known Exploited Vulnerabilities