HIGH
The pstm_reverse function in MatrixSSL before 3.8.4 allows remote attackers to cause a denial of service (invalid memory read and crash) via a (1) zero value or (2) the key's modulus for the secret key during RSA key exchange
Published Jan 13, 2017
7.5
HIGHCVSS 3.0
EPSS 1.69%
Description
The pstm_reverse function in MatrixSSL before 3.8.4 allows remote attackers to cause a denial of service (invalid memory read and crash) via a (1) zero value or (2) the key's modulus for the secret key during RSA key exchange.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
7.5 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.69% 0.01693
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.01693
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 1.69% (0.01693) | 76.30th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.69% (0.01693) | 74.05th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.81% (0.00813) | 72.59th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.58% (0.00585) | 78.89th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.58% (0.00585) | 77.49th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.58% (0.00585) | 74.84th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.14% (0.01136) | 59.45th | v2 (v2022.01.01) |
| Oct 18, 2022 | 1.14% (0.01136) | 58.28th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.14% (0.01136) | 56.27th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.14% (0.01136) | 34.23th | v2 (v2022.01.01) |
Weaknesses (1)
References (3)
- http://www.matrixssl.org/blog/releases/matrixssl_3_8_4 x_refsource_CONFIRMPatchVendor Advisory
- http://www.securityfocus.com/bid/92604 vdb-entryx_refsource_BID
- https://blog.fuzzing-project.org/51-Fun-with-Bignums-Crashing-MatrixSSL-and-more.html x_refsource_MISCThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.matrixssl.org/blog/releases/matrixssl_3_8_4 | x_refsource_CONFIRMPatchVendor Advisory | |
| http://www.securityfocus.com/bid/92604 | vdb-entryx_refsource_BID | |
| https://blog.fuzzing-project.org/51-Fun-with-Bignums-Crashing-MatrixSSL-and-more.html | x_refsource_MISCThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jan 13, 2017
Updated Aug 6, 2024
Reserved Aug 19, 2016
Link CVE-2016-6886
CISA Vulnrichment
Updated n/a