CVE-2026-3580

| EUVD-2026-13172 MEDIUM
2026-03-19 wolfSSL
4.7
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

4
Patch Released
Mar 31, 2026 - 21:13 nvd
Patch available
EUVD ID Assigned
Mar 19, 2026 - 20:00 euvd
EUVD-2026-13172
Analysis Generated
Mar 19, 2026 - 20:00 vuln.today
CVE Published
Mar 19, 2026 - 19:46 nvd
MEDIUM 4.7

Tags

Information Disclosure

Description

In wolfSSL 5.8.4, constant-time masking logic in sp_256_get_entry_256_9 is optimized into conditional branches (bnez) by GCC when targeting RISC-V RV32I with -O3. This transformation breaks the side-channel resistance of ECC scalar multiplication, potentially allowing a local attacker to recover secret keys via timing analysis.

Analysis

CVE-2026-3580 is a security vulnerability (CVSS 4.7). Remediation should follow standard vulnerability management procedures.

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Remediation

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

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Priority Score

24
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +24
POC: 0

Vendor Status

Debian

wolfssl
Release Status Fixed Version Urgency
bullseye vulnerable 4.6.0+p1-0+deb11u2 -
bookworm vulnerable 5.5.4-2+deb12u2 -
trixie vulnerable 5.7.2-0.1+deb13u1 -
forky, sid vulnerable 5.8.4-1 -
(unstable) fixed (unfixed) -

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CVE-2026-3580 vulnerability details – vuln.today
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