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TI-2020-15727 Aliases CVE-2020-25712GHSA-93gx-49qx-8f59

Heap-based buffer overflow in xorg-x11-server

Priority LOW 34CWE-122Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 9 fixed, 2 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-122 and the CVSS impact.

Summary

A flaw was found in xorg-x11-server before 1.20.10. A heap-buffer overflow in XkbSetDeviceInfo may lead to a privilege escalation vulnerability. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Why it matters now

EPSS 0.0034 27th percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 9 fixed, 2 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—xorg-x11-serverxorg-x11-server 1.20.10—No fix listedCNA
  • xorg-x11-server Vendor— Affected xorg-x11-server 1.20.10 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:*before 1.20.10Vulnerablex.org
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*8.0VulnerableRed Hat
  • cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:* Versions before 1.20.10 Vulnerable ·x.org
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat

Remediation

Red Hat 2 advisories

  • RHSA-2021:1804 Released 2021-05-18 · Red Hat rating Moderate
    userspace graphics, xorg-x11, and mesa security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder (v. 8) libinput-devel-1.16.3-1.el8, libwacom-devel-1.6-2.el8, mesa-libOSMesa-devel-20.3.3-2.el8 +3
    • Red Hat Enterprise Linux AppStream (v. 8) egl-wayland-1.1.5-3.el8, libX11-1.6.8-4.el8, libX11-common-1.6.8-4.el8 +38
  • RHSA-2020:5408 Released 2020-12-14 · Red Hat rating Important
    xorg-x11-server security update
    • Red Hat Enterprise Linux Client (v. 7) xorg-x11-server-1.20.4-15.el7_9, xorg-x11-server-Xephyr-1.20.4-15.el7_9, xorg-x11-server-Xorg-1.20.4-15.el7_9 +1
    • Red Hat Enterprise Linux Client Optional (v. 7) xorg-x11-server-Xdmx-1.20.4-15.el7_9, xorg-x11-server-Xnest-1.20.4-15.el7_9, xorg-x11-server-Xvfb-1.20.4-15.el7_9 +3
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) xorg-x11-server-1.20.4-15.el7_9, xorg-x11-server-Xdmx-1.20.4-15.el7_9, xorg-x11-server-Xephyr-1.20.4-15.el7_9 +7
    • Red Hat Enterprise Linux Server (v. 7) xorg-x11-server-1.20.4-15.el7_9, xorg-x11-server-Xephyr-1.20.4-15.el7_9, xorg-x11-server-Xorg-1.20.4-15.el7_9 +1
    • Red Hat Enterprise Linux Server Optional (v. 7) xorg-x11-server-Xdmx-1.20.4-15.el7_9, xorg-x11-server-Xnest-1.20.4-15.el7_9, xorg-x11-server-Xvfb-1.20.4-15.el7_9 +4
    • Red Hat Enterprise Linux Workstation (v. 7) xorg-x11-server-1.20.4-15.el7_9, xorg-x11-server-Xephyr-1.20.4-15.el7_9, xorg-x11-server-Xorg-1.20.4-15.el7_9 +1
    • Red Hat Enterprise Linux Workstation Optional (v. 7) xorg-x11-server-Xdmx-1.20.4-15.el7_9, xorg-x11-server-Xnest-1.20.4-15.el7_9, xorg-x11-server-Xvfb-1.20.4-15.el7_9 +3

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 5AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2021:1804
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2021:1804
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2020:5408
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2020:5408
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2020:5408
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2020:5408
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2020:5408
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2020:5408
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2020:5408

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-25712
  2. 2026-10-03 Alias added: GHSA-93gx-49qx-8f59

References

Patch 1

Advisory 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences