PT-2026-26332 · Wolfssl · Wolfssl

Wind Wong · Published 2026-01-01 · Updated 2026-03-23 · CVE-2026-3579

Positive Technologies (AI Summary)

CVSS v3.1

5.9

Medium

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions wolfSSL version 5.8.4

Description wolfSSL version 5.8.4 on RISC-V RV32I architectures does not have a constant-time software implementation for 64-bit multiplication. The compiler-inserted muldi3 subroutine executes in variable time depending on the operand values. This impacts several SP math functions, including sp 256 mul 9 and sp 256 sqr 9, resulting in a timing side-channel that could reveal sensitive cryptographic data.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Side Channel Attack

Weakness Enumeration

CWE-203

Related Identifiers

CVE-2026-3579

Affected Products

Wolfssl

References · 10

• https://osv.dev/vulnerability/UBUNTU-CVE-2026-3579 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-3579 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-3579 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-3579 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-3579 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-3579 · Vendor Advisory
• https://github.com/wolfSSL/wolfssl/pull/9855 · Note
• https://twitter.com/CVEnew/status/2036024185231942056 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2034846684102938909 · Twitter Post
• https://twitter.com/cyberbivash/status/2034731914704171029 · Twitter Post