CVE intelligence

CVE-2026-99100

Vulnerability intelligence

Published Oct 28, 2026Sources checked Oct 29, 2026

N/ACVSS not listedScore unavailable

What this means

Review the available evidence

CVE-2026-99100. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

What to do next

Remediation and response

Microsoft Security Response Center guidance

Vendor revision: Oct 29, 2026

Release Notes

CISA KEVNot listedBased on the latest collected catalog

EPSS0.2%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-99100?

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

wifi: p54: validate firmware record lengths

The p54 firmware parser accesses component ID and component version records without checking that their lengths cover the fields being read. A malformed record can therefore make the parser read past the record.

Validate the component ID and component version record lengths before accessing their data. The descriptor record is also checked against the shortest descriptor length found in the supported firmware images.

Reject descriptor values that underflow the RX offset or produce an empty RX range before updating the driver state.

Source: NVD