CVE-2025-53537
7.5 · HIGHOverview
CVE-2025-53537 is a high-severity vulnerability affecting oisf libhtp. It was published on July 23, 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
LibHTP is a security-aware parser for the HTTP protocol and its related bits and pieces. In versions 0.5.50 and below, there is a traffic-induced memory leak that can starve the process of memory, leading to loss of visibility. To workaround this issue, set `suricata.yaml app-layer.protocols.http.libhtp.default-config.lzma-enabled` to false. This issue is fixed in version 0.5.51.
Remediation
Check the references section for vendor advisories and patches from oisf. Update libhtp 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 |
|---|---|---|---|
| oisf | libhtp | >= 0, < 0.5.51 | Affected |
Frequently Asked Questions
What is CVE-2025-53537?
CVE-2025-53537 is a high-severity vulnerability affecting oisf libhtp. It was published on July 23, 2025 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2025-53537?
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-2025-53537?
Check the references section for vendor advisories and patches from oisf. Update libhtp 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-2025-53537?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-53537 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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