CVE-2019-19963

MEDIUMNVD 5.35.3—

5.3

An issue was discovered in wolfSSL before 4.3.0 in a non-default configuration where DSA is enabled. DSA signing uses the BEEA algorithm during modular inversion of the nonce, leading to a side-channel attack against the nonce.

CVSS v3: 5.3
EG Score: 5.3(medium)
EPSS: 58.2%
KEV: Not listed

Published

December 25, 2019

Last Modified

November 21, 2024

References (4)

cve@mitrehttps://github.com/wolfSSL/wolfssl/commit/7e391f0fd57f2ef375b1174d752a56ce34b2b190
cve@mitrehttps://github.com/wolfSSL/wolfssl/releases/tag/v4.3.0-stable
af854a3a-2127-422b-91ae-364da2661108https://github.com/wolfSSL/wolfssl/commit/7e391f0fd57f2ef375b1174d752a56ce34b2b190
af854a3a-2127-422b-91ae-364da2661108https://github.com/wolfSSL/wolfssl/releases/tag/v4.3.0-stable

Data Freshness Timeline

(refreshed 11× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:15 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:14 UTCEPSS rescore
2026-05-31 00:14 UTCEPSS rescore
2026-05-29 13:42 UTCEPSS rescore

Frequently asked(5)

What is CVE-2019-19963?

CVE-2019-19963 is a medium vulnerability published on December 25, 2019. An issue was discovered in wolfSSL before 4.3.0 in a non-default configuration where DSA is enabled. DSA signing uses the BEEA algorithm during modular inversion of the nonce, leading to a side-channel attack against the nonce.

When was CVE-2019-19963 disclosed?

CVE-2019-19963 was first published in the National Vulnerability Database on December 25, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2019-19963 actively exploited?

CVE-2019-19963 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 58.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2019-19963?

CVE-2019-19963 has a CVSS v3 base score of 5.3 (NVD).

How do I remediate CVE-2019-19963?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-19963, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2019-19963

📅 Published

🔄 Last Modified

🔗 References (4)