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CVE-2016-6882

21
FAUCET Score

CVE-2016-6882 describes a side-channel vulnerability in MatrixSSL versions prior to 3.8.7, specifically when DHE_RSA cipher suites are enabled. This flaw allows remote attackers to potentially extract RSA private key information through a Lenstra side-channel attack. Rated Medium (CVSS 5.9), the vulnerability requires high attack complexity but could lead to a complete compromise of confidentiality. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.8.6CPE matchmatch criteria
cpe:2.3:a:matrixssl:matrixssl:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.9MEDIUM

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.30%
Probability of exploitation in next 30 days
EPSS Percentile
67.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0130 is in the 37th percentile among its peer group of 19,955 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

access.redhat.com / blogs/766093/posts/1976703
Third Party Advisory
github.com / matrixssl/matrixssl/blob/master/CHANGES.md
PatchRelease Notes
people.redhat.com / ~fweimer/rsa-crt-leaks.pdf
Technical Description
openwall.com / lists/oss-security/2016/08/19/7
Mailing ListPatch
securityfocus.com / bid/91488