VulnSocial

CVE-2021-21311General(adminer / adminer)

LOWCVSS 7.2 · HIGHCISA KEV

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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.

adminer CVEsBack to dashboard
0.5/ 10 priority

Sources & remediation

Listed in the CISA Known Exploited Vulnerabilities catalog. Federal remediation due date: 2025-10-20. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Patch / fix
Exploit / PoC references
Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-918

Priority

LOW

Exploitation

ACTIVE

PoC

YES

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • adminer
  • debian_linux

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • General: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
adminerdebian
Products
adminerdebian_linux

1 version affected across 2 products

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-03-23: 1Technical Details · 2026-03-23: 103-23
Signal classification1 categories
General
1100.0%
Referenced assets2 URLs
By indicator
Full discourse1 post
  • Patrick Roland@DeusLogica
    General

    🔴 EPSS 94.0% | Almost certainly exploitation | medium confidence CVE-2021-21311 (EPSS 94.00%) 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 forg Highest risk of all CVEs by exploitation likelihood Source: http://FIRST.org EPSS | Reliability: B Link: https://nvd.nist.gov/vuln/detail/CVE-2021-21311 #EPSS #threatintel #CVE #cybersecurity

    Post summary

    The post reports a high EPSS score for CVE‑2021‑21311 and notes its SSFR nature in Adminer, but provides no PoC, exploit, or mitigation details.

    0000041
    310 followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
Appadmineradminer---
OSdebiandebian_linux9.0--

Explore more

Back to dashboardadminer CVEsdebian CVEsadminer vulnerabilities