CVE-2026-20465
OOB write in WLAN AP driver allows adjacent privilege escalation to privileged/system level.
Is CVE-2026-20465 being exploited?
Not confirmed. CVE-2026-20465 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 0.20% probability of exploitation in the next 30 days.
How severe is CVE-2026-20465?
CVE-2026-20465 is rated High with a CVSS score of 8.1. 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-2026-20465?
Yes. A fix has been recorded for CVE-2026-20465. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-20465 affect?
CVE-2026-20465 affects WLAN AP drivers, Windows wireless drivers (WCNCR00489200), Devices with impacted WLAN chipsets. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-20465?
Apply vendor patch WCNCR00489200 immediately; restrict Wi‑Fi adjacency until patched.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Adjacent/proximal attacker can exploit an out‑of‑bounds write to escalate to SYSTEM/kernel, enabling privileged code execution and device compromise.
Immediate action required
- affectedMT6890
- affectedMT7915
- affectedMT7916
- affectedMT7981
- affectedMT7986
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.