What’s Vulnerable › Vulnerabilities

CVE-2019-19962

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-12-25 · updated 2026-06-17
• Weakness: CWE-347

Description

wolfSSL before 4.3.0 mishandles calls to wc_SignatureGenerateHash, leading to fault injection in RSA cryptography.

Affected products

• wolfSSL: before 4.3.0 — fixed in 4.3.0

How to fix

Upgrade to a fixed version: wolfSSL 4.3.0. Check the vendor advisory for mitigations.

References

• https://github.com/wolfSSL/wolfssl/commit/23878512c65834d12811b1107d19a001478eca5d
• https://github.com/wolfSSL/wolfssl/releases/tag/v4.3.0-stable
• https://github.com/wolfSSL/wolfssl/commit/23878512c65834d12811b1107d19a001478eca5d
• https://github.com/wolfSSL/wolfssl/releases/tag/v4.3.0-stable

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