CVE-2025-13912— Potential non-constant time compiled code with Clang LLVM
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I. Basic Information for CVE-2025-13912
Vulnerability Information
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Vulnerability Title
Potential non-constant time compiled code with Clang LLVM
Source: NVD (National Vulnerability Database)
Vulnerability Description
Multiple constant-time implementations in wolfSSL before version 5.8.4 may be transformed into non-constant-time binary by LLVM optimizations, which can potentially result in observable timing discrepancies and lead to information disclosure through timing side-channel attacks.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
通过差异性导致的信息暴露
Source: NVD (National Vulnerability Database)
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 5.8.4之前版本存在安全漏洞，该漏洞源于LLVM优化导致时序差异，可能通过时序侧信道泄露信息。
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
II. Public POCs for CVE-2025-13912
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IV. Related Vulnerabilities
Same product: wolfSSL
- CVE-2026-5477
Prefix-substitution forgery via integer overflow in wolfCryp - CVE-2026-5188
Integer underflow in X.509 SAN parsing in wolfSSL - CVE-2026-5500
Improper Validation of AES-GCM Authentication Tag Length in - CVE-2026-5501
Improper Certificate Signature Verification in X.509 Chain V - CVE-2026-5466
wc_VerifyEccsiHash missing sanity check
Same vendor: wolfSSL
- CVE-2026-0930
Potential wolfSSHd Buffer out-of-bounds Read on Windows Hand - CVE-2026-5477
Prefix-substitution forgery via integer overflow in wolfCryp - CVE-2026-5188
Integer underflow in X.509 SAN parsing in wolfSSL - CVE-2026-5500
Improper Validation of AES-GCM Authentication Tag Length in - CVE-2026-5501
Improper Certificate Signature Verification in X.509 Chain V
Same weakness: CWE-203
- CVE-2026-44263
Weblate: Private Translation Enumeration via Screenshot API - CVE-2023-5872
Wago: Vulnerability in Smart Designer Web-Application - CVE-2026-33429
Parse Server: Protected field change detection oracle via Li - CVE-2026-33425
Discourse has inferable private group membership or existenc - CVE-2026-3580
Compiler-induced timing leak in sp_256_get_entry_256_9 on RI
V. Comments for CVE-2025-13912
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