THREATPORT/VULNERABILITY/CVE-2016-7949
CRITICAL SEVERITY

CVE-2016-7949

Libxrender vulnerability

CVSS
9.8
EPSS
3.7%
EPSS pct
89th
Exploited
No known
Multiple buffer overflows in the (1) XvQueryAdaptors and (2) XvQueryEncodings functions in X.org libXrender before 0.9.10 allow remote X servers to trigger out-of-bounds write operations via vectors involving length fields.
Affected vendor
X.Org
Affected product
Libxrender
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-20 — Improper Input Validation
  • CWE-787 — Out-of-bounds Write
Published
2016-12-13

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 3.7% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 89% of all scored CVEs.

Check your external exposure to CVE-2016-7949

  • Confirm whether X.Org Libxrender is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2016-7949.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2016-7949

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2016-7949 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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