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CVE-2023-53715

In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: cfg80211: Pass the PMK in binary instead of hex Apparently the hex passphrase mechanism does not work on newer…

Published Oct 22, 2025EPSS 0.21%

Overview

CVE-2023-53715 is a known-severity vulnerability. It was published on October 22, 2025.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

wifi: brcmfmac: cfg80211: Pass the PMK in binary instead of hex

Apparently the hex passphrase mechanism does not work on newer

chips/firmware (e.g. BCM4387). It seems there was a simple way of

passing it in binary all along, so use that and avoid the hexification.

OpenBSD has been doing it like this from the beginning, so this should

work on all chips.

Also clear the structure before setting the PMK. This was leaking

uninitialized stack contents to the device.

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

Refgit.kernel.org/stable/c/1687845eb8f37360a9ee849a3587ab659b090773Refgit.kernel.org/stable/c/2bc34facb90ceeff6f8c17d2006575a6d07c3825Refgit.kernel.org/stable/c/2fa3a5226b05e0a797c68b9609dcebe0cd236b27Refgit.kernel.org/stable/c/4e8dc0e5c7636efaadbd7e488acd34b4291c0431Refgit.kernel.org/stable/c/56c7e9c39bd54fd753c0c4b1ed10278cbd3a5f02Refgit.kernel.org/stable/c/89b89e52153fda2733562776c7c9d9d3ebf8dd6dRefgit.kernel.org/stable/c/e242c66f7ecfe8f5b6eb308f4ea464fd8589c866Refgit.kernel.org/stable/c/f8a6c53ff1d91acd5a20eb627edbffd816eb9a4e

How CyberStrike helps

Frequently asked questions

What is CVE-2023-53715?

CVE-2023-53715 is a known-severity vulnerability. It was published on October 22, 2025.

How severe is CVE-2023-53715?

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-2023-53715?

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-2023-53715?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-53715 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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