HIGH
wolfSSL before 4.3.0 mishandles calls to wc_SignatureGenerateHash, leading to fault injection in RSA cryptography
Published Dec 24, 2019
7.5
HIGHCVSS 3.1
EPSS 0.90%
Description
wolfSSL before 4.3.0 mishandles calls to wc_SignatureGenerateHash, leading to fault injection in RSA cryptography.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
7.5 HIGH NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact None
Availability Impact None
No CVSS v3.0 score for this CVE.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:P/I:N/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
0.90% 0.00904
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.00904
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.90% (0.00904) | 58.38th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.90% (0.00904) | 58.25th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.19% (0.00186) | 56.33th | v3 (v2023.03.01) |
| Jul 10, 2024 | 0.19% (0.00186) | 56.24th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.19% (0.00186) | 54.19th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 9.03% (0.09029) | 86.86th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.74% (0.02742) | 63.06th | v1 |
| Jan 6, 2022 | 2.74% (0.02742) | 62.72th | v1 |
| Jan 5, 2022 | 0.62% (0.00624) | 46.35th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.62% (0.00624) | 0.00th | v1 |
Weaknesses (1)
References (2)
- https://github.com/wolfSSL/wolfssl/commit/23878512c65834d12811b1107d19a001478eca5d x_refsource_MISCPatchThird Party Advisory
- https://github.com/wolfSSL/wolfssl/releases/tag/v4.3.0-stable x_refsource_MISCRelease NotesThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/wolfSSL/wolfssl/commit/23878512c65834d12811b1107d19a001478eca5d | x_refsource_MISCPatchThird Party Advisory | |
| https://github.com/wolfSSL/wolfssl/releases/tag/v4.3.0-stable | x_refsource_MISCRelease NotesThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Dec 24, 2019
Updated Aug 5, 2024
Reserved Dec 24, 2019
Link CVE-2019-19962
CISA Vulnrichment
Updated n/a