Critical 10.0Published Aug 24, 2026

CVE-2025-36939Multiple vulnerabilities exist in OpenThread's handling of MLE packets.

Updated under an hour ago (Oct 27, 2026, 5:00 PM ET)

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It affects Google Nest and 3 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

Multiple vulnerabilities exist in OpenThread's handling of MLE packets. An authenticated attacker on the same Thread network could send specially crafted packets to cause a denial of service. These issues include triggerable assertion failures and a stack-based buffer overflow.

CVSS: 10.0 CRITICAL (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Weakness (CWE): CWE-121
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Google_Devices
NVD analysis: Analyzed
Record last updated: Aug 24, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Google Nest google:nest (from the name)	3.78.518349	CNA record
google nest_wifi_router_firmware google:nest_wifi_router_firmware	3.78.518349	NVD
google nest_wifi_point_firmware google:nest_wifi_point_firmware	3.78.518349	NVD
google nest_wifi_pro_firmware google:nest_wifi_pro_firmware	3.78.518349	NVD

References

References

https://support.google.com/product-documentation/answer/17072818?hl=en&ref_topic=12974021&sjid=16276349370796658455-NC	vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.