How severe is CVE-2023-2626?

CVE-2023-2626 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-2626 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-2626?

CVE-2023-2626 primarily affects Google Nest Hub Max Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-2626?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-2626 published?

CVE-2023-2626 was published on 2023-07-25 and last updated on 2026-06-17.

CVE-2023-2626

CVE-2023-2626 is a high-severity vulnerability in Google Nest Hub Max Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Google Nest Hub Max Firmware
Published: 2023-07-25
Last modified: 2026-06-17

Description

There exists an authentication bypass vulnerability in OpenThread border router devices and implementations. This issue allows unauthenticated nodes to craft radio frames using “Key ID Mode 2”: a special mode using a static encryption key to bypass security checks, resulting in arbitrary IP packets being allowed on the Thread network. This provides a pathway for an attacker to send/receive arbitrary IPv6 packets to devices on the LAN, potentially exploiting them if they lack additional authentication or contain any network vulnerabilities that would normally be mitigated by the home router’s NAT firewall. Effected devices have been mitigated through an automatic update beyond the affected range.

Frequently asked questions

What is CVE-2023-2626?: There exists an authentication bypass vulnerability in OpenThread border router devices and implementations. This issue allows unauthenticated nodes to craft radio frames using “Key ID Mode 2”: a special mode using a static encryption key to bypass security checks, resulting in arbitrary IP packets being allowed on the Thread network. This provides a pathway for an attacker to send/receive arbitrary IPv6 packets to devices on the LAN, potentially exploiting them if they lack additional authentication or contain any network vulnerabilities that would normally be mitigated by the home router’s NAT firewall. Effected devices have been mitigated through an automatic update beyond the affected range.
How severe is CVE-2023-2626?: CVE-2023-2626 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-2626 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-2626?: CVE-2023-2626 primarily affects Google Nest Hub Max Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-2626?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-2626 published?: CVE-2023-2626 was published on 2023-07-25 and last updated on 2026-06-17.

References

https://support.google.com/product-documentation/answer/13588832?hl=en&ref_topic=12974021&sjid=7833436865896465963-NA#zippy=%2Cnest-wifi

Affected products (5)

cpe:2.3:o:google:nest_hub_max_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:google:nest_hub_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:google:wifi_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:google:nest_wifi_point_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:google:nest_wifi_6e_firmware:*:*:*:*:*:*:*:*

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