Go to homepageCyberStrike

Menu

Star on GitHub · 3.3k
Sign inDownload

CVE-2021-21311

7.2 · HIGHActively Exploited

Adminer is an open-source database management in a single PHP file.

Published Feb 11, 2021CWE-918EPSS 98.46%

Overview

CVE-2021-21311 is a high-severity vulnerability. It was published on February 11, 2021 and has a CVSS 3.1 base score of 7.2 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/vrana/adminer/commit/ccd2374b0b12bd547417bf0dacdf153826c83351GitHubgithub.com/vrana/adminer/files/5957311/Adminer.SSRF.pdfGitHubgithub.com/vrana/adminer/security/advisories/GHSA-x5r2-hj5c-8jx6Reflists.debian.org/debian-lts-announce/2021/03/msg00002.htmlRefpackagist.org/packages/vrana/adminerGitHubgithub.com/vrana/adminer/commit/ccd2374b0b12bd547417bf0dacdf153826c83351GitHubgithub.com/vrana/adminer/files/5957311/Adminer.SSRF.pdfGitHubgithub.com/vrana/adminer/security/advisories/GHSA-x5r2-hj5c-8jx6Reflists.debian.org/debian-lts-announce/2021/03/msg00002.htmlRefpackagist.org/packages/vrana/adminer

How CyberStrike helps

Frequently asked questions

What is CVE-2021-21311?

CVE-2021-21311 is a high-severity vulnerability. It was published on February 11, 2021 and has a CVSS 3.1 base score of 7.2 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

How severe is CVE-2021-21311?

This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-21311?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-21311?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-21311 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related HIGH CVEs from 2021

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999
LiveWatch live →