CVE-2019-19963 json
An issue was discovered in wolfSSL before 4.3.0 in a non-default configuration where DSA is enabled.
published 2019-12-24 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-9551
- cvss
- 5.3
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 61%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- wolfssl wolfssl 4.3.0
- wolfssl Debian 13, Debian 12 4.3.0+dfsg-1
debian advisories DEBIAN-CVE-2019-19963
Exploit prediction
0.95% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N |
References
-
github.com
/wolfSSL/wolfssl/commit/7e391f0fd57f2ef375b1174d752a56ce34b2b190
patch, third-party-advisory
-
github.com
/wolfSSL/wolfssl/releases/tag/v4.3.0-stable
release-notes, third-party-advisory
Sources
- CVE List CVE-2019-19963
- NVD CVE-2019-19963
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.