Security readout for executives and security teams
Plain-English summary
wolfSSL versions before 4.3.0 had an ECC cryptography routine that did not adequately resist side-channel attacks. In plain terms, certain cryptographic operations may have leaked information through observable behavior rather than direct data exposure. The public bundle does not provide CVSS scoring, affected downstream products, or evidence of active exploitation.
Executive priority
Treat this as a targeted cryptography dependency issue. It is not supported as actively exploited in the provided evidence, but organizations using wolfSSL in security-sensitive or embedded products should verify remediation because key exposure risks can be severe if side-channel conditions are met.
Technical view
CVE-2019-19960 concerns wc_ecc_mulmod_ex in wolfSSL before 4.3.0. The issue is improper side-channel resistance in elliptic-curve scalar multiplication. The provided sources identify the fixed release and a code commit, but do not provide detailed exploit prerequisites, CWE mapping, or affected downstream integrations.
Likely exposure
Exposure is most likely where applications, firmware, appliances, or embedded products include wolfSSL earlier than 4.3.0 and use ECC private-key operations. The bundle does not identify specific downstream vendors, packages, or CPEs.
Exploitation context
The CVE is not listed as KEV in the supplied bundle, and no cited source states active exploitation. Side-channel practicality depends on attacker observation capability, deployment context, and use of vulnerable ECC operations.
Researcher notes
The public record is sparse: no CVSS, CWE, CPE list, or exploitation details are included in the bundle. Analysis should focus on dependency identification, ECC usage paths, and whether the v4.3.0 fix or equivalent vendor backport is present.
Mitigation direction
- Upgrade wolfSSL to version 4.3.0 or later where applicable.
- Check wolfSSL release notes and vendor guidance before production rollout.
- Ask embedded or appliance vendors for firmware using fixed wolfSSL code.
- Prioritize systems performing ECC private-key operations in exposed environments.
Validation and detection
- Inventory applications and firmware for bundled or linked wolfSSL versions.
- Confirm deployed wolfSSL is 4.3.0 or later.
- Check vendored source for the referenced fixing commit where version strings are unreliable.
- Review SBOMs and supplier attestations for wolfSSL dependency evidence.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2019-19960 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/wolfSSL/wolfssl/releases/tag/v4.3.0-stableCVE reference · x_refsource_MISC
- https://github.com/wolfSSL/wolfssl/commit/5ee9f9c7a23f8ed093fe1e42bc540727e96cebb8CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.