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CVE Record

CVE-2016-7947: Multiple integer overflows in X.org libXrandr before 1.5.1 allow remote X servers to trigger out-of-bounds...

Multiple integer overflows in X.org libXrandr before 1.5.1 allow remote X servers to trigger out-of-bounds write operations via a crafted response.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

A flaw in X.Org libXrandr can let a malicious or compromised X server send crafted data that causes an X client to write outside expected memory. The practical risk is strongest where users run X applications against untrusted remote X servers. Sources do not show active exploitation or a CVSS score.

Executive priority

Treat this as a targeted hardening and patch-management issue, not an emergency based on current evidence. Prioritize older Linux desktop and remote X11 environments because exploitation would target user-side client processes.

Technical view

CVE-2016-7947 covers multiple integer overflows in libXrandr before 1.5.1. The issue is in handling protocol responses from an X server and can lead to out-of-bounds write operations in the client process. Upstream commit and distribution advisories indicate patched library releases were provided.

Likely exposure

Exposure is most likely on Linux or Unix systems with libXrandr versions before 1.5.1, especially workstations, jump hosts, or legacy environments using remote X11 connections to servers not fully trusted.

Exploitation context

The provided sources describe a crafted response from a remote X server as the trigger. KEV is false, and the bundle contains no evidence of active exploitation, public exploit use, or exploitation in the wild.

Researcher notes

The source bundle lacks CVSS, CWE, and detailed affected CPE data. Analysis should stay anchored to libXrandr before 1.5.1, integer overflow, crafted X server response, and out-of-bounds client write behavior.

Mitigation direction

  • Upgrade libXrandr to 1.5.1 or a distro-patched equivalent.
  • Apply relevant vendor security updates from Gentoo, Fedora, or your distribution.
  • Avoid connecting X clients to untrusted remote X servers.
  • Review legacy X11 forwarding and remote desktop workflows for unnecessary exposure.

Validation and detection

  • Inventory installed libXrandr package versions across Linux and Unix endpoints.
  • Confirm vendor packages include the upstream security fix or version 1.5.1 or later.
  • Identify systems permitting X11 forwarding or remote X server connections.
  • Prioritize validation on administrator workstations and shared jump hosts.
Prepared
Confidence
medium
Sources
7

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2016-7947 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
6Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.