Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-21640

Severity CVSS v4.0:
Pending analysis
Type:
CWE-134 Format String Vulnerability
Publication date:
20/01/2026
Last modified:
30/01/2026

Description

HackerOne community member Faraz Ahmed (PakCyberbot) has reported a format string injection in the Revive Adserver settings. When specific character combinations are used in a setting, the admin user console could be disabled due to a fatal PHP error.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N CVSS v3.1 Severity and Metrics:

Base Score: 2.70 LOW
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): Low
Availability (A): None

Base Score 3.x
2.70
Severity 3.x
LOW

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:aquaplatform:revive_adserver:*:*:*:*:*:*:*:* 6.0.0 (including) 6.0.4 (including)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools