HOMEVULNERABILITIESCVE-2016-6882
MEDIUM

CVE-2016-6882

CWE-200Published: March 3, 2017· Updated: Jun 17, 2026

5.9
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2016-6882 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 5.9.

From a weakness classification perspective (CWE-200): Information exposure vulnerabilities leak sensitive data to unauthorized actors.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

matrixssl1 product(s)
matrixssl
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttp://www.openwall.com/lists/oss-security/2016/08/19/7
PATCHhttps://github.com/matrixssl/matrixssl/blob/master/CHANGES.md#validation-of-rsa-signature-creation
PATCHhttp://www.openwall.com/lists/oss-security/2016/08/19/7
PATCHhttps://github.com/matrixssl/matrixssl/blob/master/CHANGES.md#validation-of-rsa-signature-creation
ADVISORYhttps://access.redhat.com/blogs/766093/posts/1976703
ADVISORYhttps://access.redhat.com/blogs/766093/posts/1976703

All References (10)

→
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

Quick Facts

CVE IDCVE-2016-6882
CVSS Score5.9 / 10
SeverityMEDIUM
WeaknessCWE-200
CISA KEVNo
Affected1 vendor(s)
PublishedMar 3, 2017

Related CVEs (CWE-200)

CVE-2026-27604
10.0
CVE-2008-0082
10.0
CVE-2011-3497
10.0
CVE-2025-22612
10.0
CVE-2025-53624
10.0
CVE-2008-3010
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2016-6882 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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