CVE-2026-56705

Adminer before 5.4.3 Remote Code Execution via MSSQL PDO DSN Injection

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.

Affected

vrana · adminer

CVSS v4.0 VULNCHECK

9.3 CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 VULNCHECK

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.90% chance of exploitation in the next 30 days, 59th percentile

Published

2026-08-25

Proof-of-concept exploits (2)

• ChiefYoru/Exploit-CVE-2026-567050★ · 2026-08-26
• Boreas37/CVE-2026-567052★ · 2026-08-25

References

• CVE Record
• NVD entry

Related

• CVE-2026-18351
• CVE-2026-21628
• CVE-2026-48907
• CVE-2026-48939
• CVE-2026-56290
• CVE-2026-56291