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CVE-2025-48945

Published Jun 20, 2025 CWE-416 EPSS 0.43% (35th pctl)

Overview

CVE-2025-48945 is a known-severity vulnerability. It was published on June 20, 2025.

Technical Description

pycares is a Python module which provides an interface to c-ares. c-ares is a C library that performs DNS requests and name resolutions asynchronously. Prior to version 4.9.0, pycares is vulnerable to a use-after-free condition that occurs when a Channel object is garbage collected while DNS queries are still pending. This results in a fatal Python error and interpreter crash. The vulnerability has been fixed in pycares 4.9.0 by implementing a safe channel destruction mechanism.

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/aio-libs/aiodns/commit/f259a6e3650555157af53ac2b39f2ff545321d55 GitHub github.com/aio-libs/aiodns/releases/tag/v3.5.0 GitHub github.com/saghul/pycares/commit/ebfd7d71eb8e74bc1057a361ea79a5906db510d4 GitHub github.com/saghul/pycares/releases/tag/v4.9.0 GitHub github.com/saghul/pycares/security/advisories/GHSA-5qpg-rh4j-qp35 GitHub github.com/saghul/pycares/security/advisories/GHSA-5qpg-rh4j-qp35 GitHub github.com/saghul/pycares/security/advisories/GHSA-5qpg-rh4j-qp35 GitHub github.com/saghul/pycares/security/advisories/GHSA-5qpg-rh4j-qp35

Frequently Asked Questions

What is CVE-2025-48945?

CVE-2025-48945 is a known-severity vulnerability. It was published on June 20, 2025.

How severe is CVE-2025-48945?

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-2025-48945?

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-2025-48945?

CyberStrike's AI-powered security agents can automatically detect CVE-2025-48945 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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HackBrowser

Browser-based exploitation validates findings with real proof-of-concept.
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