CVE-2026-3580Disclosure(wolfssl / wolfssl)

LOWCVSS 4.7 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-203

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • wolfssl

Threat summary

  • 3 mentions across 3 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 3 signals
  • Disclosure: 3 classified signals
  • Peaked 2d ago at 1 mentions (2026-03-19); latest day: 1
  • 3 total mentions across 3 days

Affected systems

Vendors
Products
wolfssl

1 version affected across 1 product

Deep dive

Activity timeline3 mentions / 3d
00111Mentions · 2026-03-19: 1Mentions · 2026-03-20: 1Mentions · 2026-03-23: 1Technical Details · 2026-03-19: 1Technical Details · 2026-03-20: 1Technical Details · 2026-03-23: 103-1903-2003-23
Signal classification1 categories
Disclosure
3100.0%
Referenced assets3 URLs
Full discourse3 posts
  • CVE@CVEnew
    Disclosure

    CVE-2026-3580 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 … https://www.cve.org/CVERecord?id=CVE-2026-3580

    Post summary

    The post reports a constant‑time masking logic issue in wolfSSL 5.8.4 that is exposed when GCC optimizes for RISC‑V RV32I with -O3, but it offers no exploit, PoC, or mitigation guidance.

    0000060
    56.8K followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-3580 Side-Channel Vulnerability in wolfSSL 5.8.4 ECC Scalar Multiplication on RISC-V https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-3580

    Post summary

    A side‑channel vulnerability affecting wolfSSL 5.8.4’s ECC scalar multiplication on RISC‑V has been identified and publicly disclosed.

    0000044
    4.0K followersView on X
  • CyberDudeBivash® | Global Cybersecurity Company@cyberbivash
    Disclosure

    🚨 CYBERDUDEBIVASH SENTINEL APEX ALERT 🚨 Threat: CVE-2026-3580 - Compiler-induced timing leak in sp_256_get_entry_256_9 on RISC-V Intel Report: https://ift.tt/Do1jz9O

    Post summary

    The alert announces CVE‑2026‑3580, a compiler‑induced timing leak in a RISC‑V function, but provides no proof‑of‑concept, exploit details, or remediation steps.

    0000065
    336 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appwolfsslwolfssl5.8.4--

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