What is CVE-2026-21640?

CVE-2026-21640 is a low-severity vulnerability in Aquaplatform Revive_adserver, classified under Use of Externally-Controlled Format String. CVSS score: 2.7/10. Published 2026-01-20.

How severe is CVE-2026-21640?

Low severity. CVSS v3 base score is 2.7 out of 10.

Vulnerability in Aquaplatform Revive_adserver

CVE-2026-21640

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 fata…

EPSS: 0.002 (11.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 2.7 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N.

Affected products

Aquaplatform Revive_adserver
Revive Adserver — versions 6

Weakness classification (CWE)

CWE-134 — Use of Externally-Controlled Format String

References

support@hackerone.com (Third Party Advisory)

Frequently asked questions

What is CVE-2026-21640?: CVE-2026-21640 is a low-severity vulnerability in Aquaplatform Revive_adserver, classified under Use of Externally-Controlled Format String. CVSS score: 2.7/10. Published 2026-01-20.
How severe is CVE-2026-21640?: Low severity. CVSS v3 base score is 2.7 out of 10.