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CVE-2026-10664— Out-of-bounds write in nRF70 Wi-Fi driver power-save event handler (unbounded TWT flow count)

Quick assessment

Affected
zephyrproject zephyr
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

zephyrproject zephyr是zephyrproject组织开源的一款实时操作系统内核。 Zephyr Project Zephyr 4.4.0版本存在缓冲区错误漏洞，该漏洞源于nRF70 Wi-Fi驱动器的省电事件处理程序在复制TWT流条目时未对num_twt_flows进行验证，可能导致越界写入和越界读取。

CVSS 5.0 · Medium EPSS 0.22% · P12

Affected Version Matrix 1

VendorProduct Version RangeStatus
zephyrproject zephyr 4.4.0< 4.5.0 affected
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I. Basic Information for CVE-2026-10664

Vulnerability Information
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Vulnerability Title
Out-of-bounds write in nRF70 Wi-Fi driver power-save event handler (unbounded TWT flow count)
Source: CVE Program / CVE List V5
Vulnerability Description
The nRF70 Wi-Fi driver's power-save event handler nrf_wifi_event_proc_get_power_save_info() in drivers/wifi/nrf_wifi/src/wifi_mgmt.c copied TWT (Target Wake Time) flow entries from an nrf_wifi_umac_event_power_save_info event into the fixed-size twt_flows[WIFI_MAX_TWT_FLOWS] (8-element) array of a caller-supplied struct wifi_ps_config, looping over event-provided num_twt_flows without validating it against WIFI_MAX_TWT_FLOWS or checking event_len. When num_twt_flows exceeds 8, the handler writes past the destination array (which is typically on the caller's stack, e.g. the wifi ps shell command) -- an out-of-bounds write of ~40-byte TWT entries -- and reads twt_flow_info[i] past the event buffer. The event is delivered by the nRF70 co-processor firmware in response to a host-initiated power-save GET, so reaching the overflow requires the firmware to emit a malformed or out-of-range event; the trust boundary is host-to-trusted-coprocessor rather than a direct remote-AP write, with over-the-air influence on the flow count being indirect and bounded by the 3-bit TWT flow-id space. Affected: builds with CONFIG_NRF70_STA_MODE on releases through v4.4.0. The fix rejects events with num_twt_flows > WIFI_MAX_TWT_FLOWS or with event_len shorter than the claimed entries, and adds a NULL check on the caller buffer.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Vulnerability Title
Zephyr Project Zephyr 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
zephyrproject zephyr是zephyrproject组织开源的一款实时操作系统内核。 Zephyr Project Zephyr 4.4.0版本存在缓冲区错误漏洞，该漏洞源于nRF70 Wi-Fi驱动器的省电事件处理程序在复制TWT流条目时未对num_twt_flows进行验证，可能导致越界写入和越界读取。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
zephyrproject zephyr 4.4.0 ~ 4.5.0 -

II. Public POCs for CVE-2026-10664

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III. Intelligence Information for CVE-2026-10664

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Patches & Fixes for CVE-2026-10664 (1)

Vendor Advisories for CVE-2026-10664 (1)

Same Patch Batch · zephyrproject · 2026-07-12 · 6 CVEs total

CVE-2026-10666 8.1 HIGH Stack buffer overflow in `net_ipaddr_parse()` IPv4 address-with-port parsing in `subsys/ne
CVE-2026-10667 7.8 HIGH SMP use-after-free in Zephyr `CONFIG_USERSPACE` dynamic kernel-object tracking, reachable
CVE-2026-10665 7.4 HIGH Heap buffer overflow on WireGuard receive path via unbounded incoming packet length
CVE-2026-10663 6.1 MEDIUM Use-after-free / double-free of the root USB device in the experimental USB host stack
CVE-2026-10668 2.4 LOW Host-triggerable control-endpoint wedge (DoS) in Nuvoton NuMaker HSUSBD UDC driver

IV. Related Vulnerabilities

Same product: zephyr
Same vendor: zephyrproject
Same weakness: CWE-787

V. Comments for CVE-2026-10664

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