CVE-2025-53634
7.5 · HIGHOverview
CVE-2025-53634 is a high-severity vulnerability affecting ctfer-io chall-manager. It was published on July 10, 2025 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
Chall-Manager is a platform-agnostic system able to start Challenges on Demand of a player. The HTTP Gateway processes headers, but with no timeout set. With a slow loris attack, an attacker could cause Denial of Service (DoS). Exploitation does not require authentication nor authorization, so anyone can exploit it. It should nonetheless not be exploitable as it is highly recommended to bury Chall-Manager deep within the infrastructure due to its large capabilities, so no users could reach the system. Patch has been implemented by commit 1385bd8 and shipped in v0.1.4.
Remediation
Check the references section for vendor advisories and patches from ctfer-io. Update chall-manager to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| ctfer-io | chall-manager | >= 0, < 0.1.4 | Affected |
Frequently Asked Questions
What is CVE-2025-53634?
CVE-2025-53634 is a high-severity vulnerability affecting ctfer-io chall-manager. It was published on July 10, 2025 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2025-53634?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2025-53634?
Check the references section for vendor advisories and patches from ctfer-io. Update chall-manager to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2025-53634?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-53634 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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