THREATPORT/VULNERABILITY/CVE-2016-6890
CRITICAL SEVERITY

CVE-2016-6890

Matrixssl vulnerability

CVSS
9.8
EPSS
6.4%
EPSS pct
93th
Exploited
No known
Heap-based buffer overflow in MatrixSSL before 3.8.6 allows remote attackers to execute arbitrary code via a crafted Subject Alt Name in an X.509 certificate.
Affected vendor
Matrixssl
Affected product
Matrixssl
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
  • CWE-119 — Improper Restriction of Operations within Memory Bounds
Published
2017-01-05

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 6.4% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 93% of all scored CVEs.

Check your external exposure to CVE-2016-6890

  • Confirm whether Matrixssl Matrixssl is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2016-6890.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2016-6890

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2016-6890 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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