CVE-2016-6882
MatrixSSL before 3.8.7, when the DHE_RSA based cipher suite is supported, makes it easier for remote attackers to obtain RSA private key information by conducting a Lenstra side-channel attack.
Does this matter?
Lower severity and a low EPSS score (1.30%). Track it; it rarely justifies an emergency change on its own.
Description
MatrixSSL before 3.8.7, when the DHE_RSA based cipher suite is supported, makes it easier for remote attackers to obtain RSA private key information by conducting a Lenstra side-channel attack.
- CVSS 3.0
- 5.9 MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 1.30% probability · 70th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-200, CWE-320
- Affected
- matrixssl/matrixssl
- Source
- cve@mitre.org
EPSS 1.3% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.openwall.com/lists/oss-security/2016/08/19/7Mailing List, Patch
- http://www.securityfocus.com/bid/91488
- https://access.redhat.com/blogs/766093/posts/1976703Third Party Advisory
- https://github.com/matrixssl/matrixssl/blob/master/CHANGES.md#validation-of-rsa-signature-creationPatch, Release Notes
- https://people.redhat.com/~fweimer/rsa-crt-leaks.pdfTechnical Description
- http://www.openwall.com/lists/oss-security/2016/08/19/7Mailing List, Patch
- http://www.securityfocus.com/bid/91488
- https://access.redhat.com/blogs/766093/posts/1976703Third Party Advisory
- https://github.com/matrixssl/matrixssl/blob/master/CHANGES.md#validation-of-rsa-signature-creationPatch, Release Notes
- https://people.redhat.com/~fweimer/rsa-crt-leaks.pdfTechnical Description
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.