CVE-2026-56703

Adminer before 5.4.3 Remote Code Execution via SQLite VACUUM INTO

HIGH
7.2
CVSS Score
Published: August 25, 2026 at 01:30 AM UTC
Updated: October 12, 2026 at 03:10 PM UTC
2 products affected across 2 vendorsAdminerAdminer

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Severity
HIGH7.2
Exploit prediction
EPSS 1%
SSVC
PoC

Description

Adminer before 5.4.3 contains a remote code execution vulnerability in SQLite query handling where VACUUM INTO is not blocked despite ATTACH restrictions. Authenticated attackers can execute VACUUM INTO to write PHP code to arbitrary file paths and execute commands on the server.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 5.4.3
Affected range stops below 5.4.3, so it looks safe — our inference, not a vendor statement
90%
0 ≤ v < 5.4.30
Vendor states this is fixed in 5.4.3 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.2HIGHVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-94

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