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CVE-2025-4516

Published May 15, 2025 CWE-416 EPSS 0.22% (12th pctl)

Overview

CVE-2025-4516 is a known-severity vulnerability. It was published on May 15, 2025.

Technical Description

There is an issue in CPython when using `bytes.decode("unicode_escape", error="ignore|replace")`. If you are not using the "unicode_escape" encoding or an error handler your usage is not affected. To work-around this issue you may stop using the error= handler and instead wrap the bytes.decode() call in a try-except catching the DecodeError.

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

GitHub github.com/python/cpython/commit/4398b788ffc1f954a2c552da285477d42a571292 GitHub github.com/python/cpython/commit/6279eb8c076d89d3739a6edb393e43c7929b429d GitHub github.com/python/cpython/commit/69b4387f78f413e8c47572a85b3478c47eba8142 GitHub github.com/python/cpython/commit/73b3040f592436385007918887b7e2132aa8431f GitHub github.com/python/cpython/commit/8d35fd1b34935221aff23a1ab69a429dd156be77 GitHub github.com/python/cpython/commit/9f69a58623bd01349a18ba0c7a9cb1dad6a51e8e GitHub github.com/python/cpython/commit/ab9893c40609935e0d40a6d2a7307ea51aec598b GitHub github.com/python/cpython/issues/133767 GitHub github.com/python/cpython/pull/129648 Ref mail.python.org/archives/list/[email protected]/thread/L75IPBBTSCYEF56I2M4KIW353BB3AY74/

Frequently Asked Questions

What is CVE-2025-4516?

CVE-2025-4516 is a known-severity vulnerability. It was published on May 15, 2025.

How severe is CVE-2025-4516?

CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.

How do I fix or remediate CVE-2025-4516?

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-2025-4516?

CyberStrike's AI-powered security agents can automatically detect CVE-2025-4516 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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