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CVE-2025-27810

Quick assessment

Affected
Mbed mbedtls
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.

Mbed TLS是Mbed TLS开源的一个开源、可移植、易于使用、可读且灵活的 SSL 库。 Mbed TLS 2.28.10之前版本和3.6.3之前的3.x版本存在安全漏洞，该漏洞源于在某些情况下使用未初始化的栈内存，可能导致认证绕过。

CVSS 5.4 · Medium EPSS 0.29% · P20
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I. Basic Information for CVE-2025-27810

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Mbed TLS before 2.28.10 and 3.x before 3.6.3, in some cases of failed memory allocation or hardware errors, uses uninitialized stack memory to compose the TLS Finished message, potentially leading to authentication bypasses such as replays.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对未经初始化资源的使用
Source: CVE Program / CVE List V5
Vulnerability Title
Mbed TLS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mbed TLS是Mbed TLS开源的一个开源、可移植、易于使用、可读且灵活的 SSL 库。 Mbed TLS 2.28.10之前版本和3.6.3之前的3.x版本存在安全漏洞，该漏洞源于在某些情况下使用未初始化的栈内存，可能导致认证绕过。
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
Mbed mbedtls 0 ~ 2.28.10 -

II. Public POCs for CVE-2025-27810

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III. Intelligence Information for CVE-2025-27810

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Vendor Advisories for CVE-2025-27810 (1)

Vendor Pages for CVE-2025-27810 (1)

IV. Related Vulnerabilities

Same product: mbedtls
Same vendor: Mbed
Same weakness: CWE-908

V. Comments for CVE-2025-27810

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