CVE-2019-19963
mediumpriority · track · 21OT risk · elevatedEPSS 0.010 · 61 %ileEUUSgrimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.95% (61st) EPSS
CVSS 4.3 · medium
Who says so?
3 sources
cnnvd · enisa_euvd · nvd
EPSS · scored 2026-10-28
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.
01
cvss
Technical severity, 0–10. One row per scoring source.
5.3
010
base score 0–10 · higher = more severe · hover a vector to decode
v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 1.4
02
weaknesses
The CWE weakness classes this flaw belongs to.
CWE-327USLLM-inferred
03
affected products (2)
Products and version ranges known to be affected.
04
also known as (3)
Other names and identifiers for this entity.
05
sources
Which sources assert this record, and when.
06
references (7)
External citations — patches, advisories, analysis.
- https://github.com/wolfSSL/wolfssl/commit/7e391f0fd57f2ef375b1174d752a56ce34b2b190cnnvd
- https://github.com/wolfSSL/wolfssl/releases/tag/v4.3.0-stablecnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2019-19963cnnvd
- https://github.com/wolfSSL/wolfssl/commit/7e391f0fd57f2ef375b1174d752a56ce34b2b190enisa_euvd
- https://github.com/wolfSSL/wolfssl/releases/tag/v4.3.0-stableenisa_euvd
- https://github.com/wolfSSL/wolfssl/commit/7e391f0fd57f2ef375b1174d752a56ce34b2b190PatchThird Party Advisorynvd
- https://github.com/wolfSSL/wolfssl/releases/tag/v4.3.0-stableRelease NotesThird Party Advisorynvd
scry
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