Vulnerability Intelligence Report
Adminer before 5.4.3 Remote Code Execution via MSSQL PDO DSN Injection
CVE-2026-56705
Adminer before 5.4.3 fails to sanitize the server field before constructing a PDO DSN string, allowing unauthenticated attackers to inject ODBC parameters via semicolons. Attackers can inject TraceFile and TraceOn parameters to write PHP code to the web root, achieving remote code execution when the trace file is accessed.
No Active Exploit Signals
CVSS Base Score
9.3
CRITICAL
EPSS Probability:0.50%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-73 ↗External Control of File Name or Path
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| vrana | adminer | 0 < 5.4.3 (affected), 5.4.3 (unaffected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.497%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | VulnCheck · Bug Bounty Provider · USA |
| Reserved | 2026-06-22T18:48:27 |
| Published | 2026-08-25T01:30:03 |
| Patch Date | 2026-07-09 |
| Last Updated | 2026-08-25T15:29:15 |
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