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CVE-2025-27363

8.1 · HIGHActively Exploited

An out of bounds write exists in FreeType versions 2.13.0 and below (newer versions of FreeType are not vulnerable) when attempting to parse font subglyph structures related to TrueType GX and vari…

Published Mar 11, 2025CWE-787EPSS 27.77%

Overview

CVE-2025-27363 is a high-severity vulnerability. It was published on March 11, 2025 and has a CVSS 3.1 base score of 8.1 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

An out of bounds write exists in FreeType versions 2.13.0 and below (newer versions of FreeType are not vulnerable) when attempting to parse font subglyph structures related to TrueType GX and variable font files. The vulnerable code assigns a signed short value to an unsigned long and then adds a static value causing it to wrap around and allocate too small of a heap buffer. The code then writes up to 6 signed long integers out of bounds relative to this buffer. This may result in arbitrary code execution. This vulnerability may have been exploited in the wild.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

References

Refwww.facebook.com/security/advisories/cve-2025-27363Refwww.openwall.com/lists/oss-security/2025/03/13/1Refwww.openwall.com/lists/oss-security/2025/03/13/11Refwww.openwall.com/lists/oss-security/2025/03/13/12Refwww.openwall.com/lists/oss-security/2025/03/13/2Refwww.openwall.com/lists/oss-security/2025/03/13/3Refwww.openwall.com/lists/oss-security/2025/03/13/8Refwww.openwall.com/lists/oss-security/2025/03/14/1Refwww.openwall.com/lists/oss-security/2025/03/14/2Refwww.openwall.com/lists/oss-security/2025/03/14/3

How CyberStrike helps

Frequently asked questions

What is CVE-2025-27363?

CVE-2025-27363 is a high-severity vulnerability. It was published on March 11, 2025 and has a CVSS 3.1 base score of 8.1 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

How severe is CVE-2025-27363?

This vulnerability has a CVSS 3.1 base score of 8.1, 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-2025-27363?

Check the references section for vendor advisories, patches, and mitigation guidance. 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-2025-27363?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-27363 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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