CVE intelligence

CVE-2025-13836

Vulnerability intelligence

Published Dec 1, 2025Sources checked Oct 26, 2026

7.5HIGHCVSS out of 10

What this means

Review the available evidence

CVE-2025-13836 and is rated High severity with a CVSS score of 7.5. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

What to do next

Remediation and response

Microsoft Security Response Center guidance

Vendor revision: Oct 21, 2026

CBL-Mariner Releases Release Notes

Vendor-listed releases

3.12.9-7

CISA KEVNot listedBased on the latest collected catalog

EPSS1.6%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2025-13836?

When reading an HTTP response from a server, if no read amount is specified, the default behavior will be to use Content-Length. This allows a malicious server to cause the client to read large amounts of data into memory, potentially causing OOM or other DoS.

Source: NVD