CVE-2025-52666Public exploitNetwork attack vector

Admin console denial via unescaped parameter references

Published Nov 20, 2025 · Updated Nov 20, 2025

Format string injection in Revive Adserver 5.5.2 and 6.0.1 and earlier allows remote authenticated users to disable the admin console. RV\Container::initContainerWithParameters passes configuration values containing unescaped percent signs to Symfony's setParameter, which resolves them as parameter references and throws a fatal PHP error when a reference is absent. Administrator privileges are required to change settings, and the resulting error blocks administrative-console access.

CVSS severity2.7
Low
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Format string injection in Revive Adserver 5.5.2 and 6.0.1 and earlier allows remote authenticated users to disable the admin console. RV\Container::initContainerWithParameters passes configuration values containing unescaped percent signs to Symfony's setParameter, which resolves them as parameter references and throws a fatal PHP error when a reference is absent. Administrator privileges are required to change settings, and the resulting error blocks administrative-console access.

The record

CVE
CVE-2025-52666
Published
Nov 20, 2025
Updated
Nov 20, 2025
Vendor
Revive Adserver Project
Product
Revive Adserver
Classifications
CWE-134, T1499.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Nov 20, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 20, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.5.2 <=5.5.2
  2. Affected versionversion=6.0.1 <=6.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Revive Adserver Project · Revive Adserverversion=5.5.2 <=5.5.2; version=6.0.1 <=6.0.1

Published CVSS scores

2.7HackerOneCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-134Use of Externally-Controlled Format String
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo