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CVE-2026-74340

8.1 · HIGH

In the Linux kernel, the following vulnerability has been resolved: wifi: wcn36xx: fix OOB read from firmware count in PRINT_REG_INFO indication The firmware-controlled rsp->count field is used a…

Published Aug 15, 2026EPSS 0.42%

Overview

CVE-2026-74340 is a high-severity vulnerability. It was published on August 15, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

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

wifi: wcn36xx: fix OOB read from firmware count in PRINT_REG_INFO indication

The firmware-controlled rsp->count field is used as the loop bound for

indexing into the flexible rsp->regs[] array without validation against

the message length. A count exceeding the actual data causes out-of-

bounds reads from the heap-allocated message buffer.

Add a check that count fits within the received message.

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/0907c06dccae9e3c8d5a68eb9014beec73a36e79Refgit.kernel.org/stable/c/22b0b8572a64362531dd0ed499b75e16282aeb2bRefgit.kernel.org/stable/c/23d210877968657bd07e1a517e0b516db20a1d80Refgit.kernel.org/stable/c/3cf92b44c4fb88a5e8de8733a4494c0956606bcaRefgit.kernel.org/stable/c/64228dfc4247aca178c01e5a37af7d8dcc7a6089Refgit.kernel.org/stable/c/df2187acfca6c6cca372c5d35f42394d9c270b09Refgit.kernel.org/stable/c/f03782f7f41f2afee5076a1ef08ced5649218771Refgit.kernel.org/stable/c/f987efff29a5fe45320ea5991c9d5cb98b676953

How CyberStrike helps

Frequently asked questions

What is CVE-2026-74340?

CVE-2026-74340 is a high-severity vulnerability. It was published on August 15, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).

How severe is CVE-2026-74340?

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-74340?

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-2026-74340?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-74340 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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