What’s Vulnerable › Vulnerabilities

CVE-2026-8369: Improper Input Validation in OpenThread NAT64 Translator

• Severity: medium (CVSS 6.0 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-13 · updated 2026-06-17
• Weakness: CWE-20

Description

Improper Input Validation in the NAT64 translator in The OpenThread Authors OpenThread before commit 26a882d on all platforms allows an attacker on the adjacent IPv4 network to inject corrupted IPv6 packets into the Thread mesh or bypass security checks via crafted IPv4 packets with options.

Affected products

• The OpenThread Authors OpenThread: commit 26a882d

References

• https://github.com/openthread/openthread/pull/12818

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