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CVE-2026-3503— Fault injection attack with ML-DSA and ML-KEM on ARM

Quick assessment

Affected
wolfSSL Inc. wolfSSL (wolfCrypt)
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.

wolfSSL（CyaSSL）是美国wolfSSL公司的一个针对嵌入式系统开发人员使用的小的、可移植的嵌入式SSL编程库。 wolfSSL存在安全漏洞，该漏洞源于ARM Cortex-M微控制器上的wolfCrypt后量子实现存在保护机制失效，可能导致物理攻击者通过诱导瞬态故障，在基于Keccak的扩展过程中破坏或重定向种子、指针值，从而危及密钥材料或加密结果。

AI Predicted 8.1 Difficulty: Hard EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1564.003 · Hidden Window
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I. Basic Information for CVE-2026-3503

Vulnerability Information
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Vulnerability Title
Fault injection attack with ML-DSA and ML-KEM on ARM
Source: CVE Program / CVE List V5
Vulnerability Description
Protection mechanism failure in wolfCrypt post-quantum implementations (ML-KEM and ML-DSA) in wolfSSL on ARM Cortex-M microcontrollers allows a physical attacker to compromise key material and/or cryptographic outcomes via induced transient faults that corrupt or redirect seed/pointer values during Keccak-based expansion. This issue affects wolfSSL (wolfCrypt): commit hash d86575c766e6e67ef93545fa69c04d6eb49400c6.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:P/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:L/SI:L/SA:N/U:Amber
Source: CVE Program / CVE List V5
Vulnerability Type
PRNG种子错误
Source: CVE Program / CVE List V5
Vulnerability Title
wolfSSL 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
wolfSSL（CyaSSL）是美国wolfSSL公司的一个针对嵌入式系统开发人员使用的小的、可移植的嵌入式SSL编程库。 wolfSSL存在安全漏洞，该漏洞源于ARM Cortex-M微控制器上的wolfCrypt后量子实现存在保护机制失效，可能导致物理攻击者通过诱导瞬态故障，在基于Keccak的扩展过程中破坏或重定向种子、指针值，从而危及密钥材料或加密结果。
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
wolfSSL Inc. wolfSSL (wolfCrypt) 5.8.2 ~ 5.9.0 -

II. Public POCs for CVE-2026-3503

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III. Intelligence Information for CVE-2026-3503

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Patches & Fixes for CVE-2026-3503 (1)

IV. Related Vulnerabilities

Same vendor: wolfSSL Inc.
Same weakness: CWE-335

V. Comments for CVE-2026-3503

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