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

Quick assessment

Affected
The OpenThread Authors OpenThread
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.

OpenThread是OpenThread开源的一个开源实现的Thread网络协议栈。 OpenThread 26a882d之前版本存在输入验证错误漏洞，该漏洞源于NAT64转换器中输入验证不当，可能导致相邻IPv4网络上的攻击者通过特制的IPv4选项数据包注入损坏的IPv6数据包或绕过安全检查。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.26% · P16

Possible ATT&CK Techniques 1 AI

T1564.004 · NTFS File Attributes

Affected Version Matrix 1

VendorProduct Version RangeStatus
The OpenThread Authors OpenThread commit 26a882d affected
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I. Basic Information for CVE-2026-8369

Vulnerability Information
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Vulnerability Title
Improper Input Validation in OpenThread NAT64 Translator
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
OpenThread 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenThread是OpenThread开源的一个开源实现的Thread网络协议栈。 OpenThread 26a882d之前版本存在输入验证错误漏洞，该漏洞源于NAT64转换器中输入验证不当，可能导致相邻IPv4网络上的攻击者通过特制的IPv4选项数据包注入损坏的IPv6数据包或绕过安全检查。
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
The OpenThread Authors OpenThread commit 26a882d -

II. Public POCs for CVE-2026-8369

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III. Intelligence Information for CVE-2026-8369

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Patches & Fixes for CVE-2026-8369 (1)

IV. Related Vulnerabilities

Same product: OpenThread
Same weakness: CWE-20

V. Comments for CVE-2026-8369

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