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CVE-2023-4863

8.8 · HIGHActively Exploited

Heap buffer overflow in libwebp in Google Chrome prior to 116.0.5845.187 and libwebp 1.3.2 allowed a remote attacker to perform an out of bounds memory write via a crafted HTML page.

Published Sep 12, 2023CWE-787EPSS 99.98%

Overview

CVE-2023-4863 is a high-severity vulnerability. It was published on September 12, 2023 and has a CVSS 3.1 base score of 8.8 (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 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Heap buffer overflow in libwebp in Google Chrome prior to 116.0.5845.187 and libwebp 1.3.2 allowed a remote attacker to perform an out of bounds memory write via a crafted HTML page. (Chromium security severity: Critical)

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.openwall.com/lists/oss-security/2023/09/21/4Refwww.openwall.com/lists/oss-security/2023/09/22/1Refwww.openwall.com/lists/oss-security/2023/09/22/3Refwww.openwall.com/lists/oss-security/2023/09/22/4Refwww.openwall.com/lists/oss-security/2023/09/22/5Refwww.openwall.com/lists/oss-security/2023/09/22/6Refwww.openwall.com/lists/oss-security/2023/09/22/7Refwww.openwall.com/lists/oss-security/2023/09/22/8Refwww.openwall.com/lists/oss-security/2023/09/26/1Refwww.openwall.com/lists/oss-security/2023/09/26/7

How CyberStrike helps

Frequently asked questions

What is CVE-2023-4863?

CVE-2023-4863 is a high-severity vulnerability. It was published on September 12, 2023 and has a CVSS 3.1 base score of 8.8 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

How severe is CVE-2023-4863?

This vulnerability has a CVSS 3.1 base score of 8.8, 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-2023-4863?

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-2023-4863?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-4863 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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