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CVE-2026-25832

Quick assessment

Affected
TrustedFirmware Mbed TLS
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.

在 Mbed TLS 3.6.x（3.6.7 之前）和 4.1.x（4.1.2 之前）中，TLS 1.3 客户端会接受一个选择了未通告（unadvertised）密码组的 HelloRetryRequest 消息。

CVSS 3.7 · Low

Possible ATT&CK Techniques 1 AI

T1595 · Active Scanning
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I. Basic Information for CVE-2026-25832

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In Mbed TLS 3.6.x before 3.6.7 and 4.1.x before 4.1.2, the TLS 1.3 client accepts HelloRetryRequest selecting an unadvertised group.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在范围间的资源转移不正确
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
TrustedFirmware Mbed TLS 3.5.0 ~ 3.6.7 -

II. Public POCs for CVE-2026-25832

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III. Intelligence Information for CVE-2026-25832

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Vendor Advisories for CVE-2026-25832 (2)

IV. Related Vulnerabilities

Same product: Mbed TLS
Same vendor: TrustedFirmware
Same weakness: CWE-669

V. Comments for CVE-2026-25832

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