---
id: CVE-2025-13912
title: >-
  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
  disclo…
summary: >-
  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
  disclo…
severity: none
cwe:
  - CWE-203
published: '2025-12-11'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T20:10:00.190'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-13912'
references:
  - url: 'https://github.com/wolfSSL/wolfssl/pull/9148'
    label: facts@wolfssl.com
tags:
  - nvd
epss: 0.00147
epssPercentile: 0.03518
ingestedAt: '2026-10-14T20:53:12.272Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.