CVE-2026-74341
Heap overflow in Linux wcn36xx Wi‑Fi driver from oversized firmware HAL response.
Is CVE-2026-74341 being exploited?
Not confirmed. CVE-2026-74341 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.34% probability of exploitation in the next 30 days.
How severe is CVE-2026-74341?
CVE-2026-74341 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-74341?
Yes. A fix has been recorded for CVE-2026-74341. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-74341 affect?
CVE-2026-74341 affects Linux kernel (wcn36xx driver), Devices with Qualcomm WCN36xx Wi‑Fi SoC, Embedded/Android devices using that chipset. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-74341?
Apply vendor/kernel updates; restrict untrusted firmware and update Wi‑Fi firmware if available.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Heap buffer overflow from firmware-controlled response enabling kernel memory corruption; may lead to local privilege escalation or kernel RCE if firmware/response can be controlled.
Patch when possible
- affected>= 8e84c25821698bdef73c0329fb2022a4673b7adc and < dae9cadf0925f1cbfb71306d60490890df3870a6
- affected>= 8e84c25821698bdef73c0329fb2022a4673b7adc and < cfc67aee0c83e7f5d43a1dad3e25c789e9cc1d92
- affected>= 8e84c25821698bdef73c0329fb2022a4673b7adc and < 15545ee71301e82d26d9a31b407ed0019eb62a60
- affected>= 8e84c25821698bdef73c0329fb2022a4673b7adc and < 1b5d8a248c3afa640bcc99fa95abcd1e36f3ee18
- affected>= 8e84c25821698bdef73c0329fb2022a4673b7adc and < 18813b90032bfaafb225906a4d2b51be4dfc02c3
- affected>= 8e84c25821698bdef73c0329fb2022a4673b7adc and < 88a240d86d3d64521f9194abe185ac71cc74d0bd
- affected3.13
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.