CVE-2023-5367

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2023-10-25. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 7.8Exploit: NoneExposed: 0

A fix is available — apply it.

A out-of-bounds write flaw was found in the xorg-x11-server. This issue occurs due to an incorrect calculation of a buffer offset when copying data stored in the heap in the XIChangeDeviceProperty function in Xi/xiproperty.c and in RRChangeOutputProperty function in randr/rrproperty.c, allowing for possible escalation of privileges or denial of service.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
46.0%
KEV
Not listed

Published

October 25, 2023

Last Modified

June 23, 2026

Advisory Details (10)

Auto-updated Jun 23, 2026
Patch available. Sources: redhat.
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2024:0010
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.8 Extended Update Support.

https://access.redhat.com/errata/RHSA-2023:7533
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update

https://access.redhat.com/errata/RHSA-2023:7526
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.2 Advanced Update Support, Red Hat Enterprise Linux 8.2 Telecommunications Update Service, and Red

https://access.redhat.com/errata/RHSA-2023:7436
redhat Patch Available

Affected: Red Hat Enterprise Linux 7.

https://access.redhat.com/errata/RHSA-2023:7428
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.6 Extended Update Support.

https://access.redhat.com/errata/RHSA-2023:7405
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.0 Extended Update Support.

https://access.redhat.com/errata/RHSA-2023:7388
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.2 Extended Update Support.

https://access.redhat.com/errata/RHSA-2023:7373
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions.

https://access.redhat.com/errata/RHSA-2023:6808
redhat Patch Available

Affected: Red Hat Enterprise Linux 7.

https://access.redhat.com/errata/RHSA-2023:6802

Vendor Advisories for CVE-2023-5367(16)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(18)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuxwayland (2:1.18.4-0ubuntu0.12+esm6) @ xenial2026-05-24ubuntu
ubuntuxwayland (2:23.2.0-1ubuntu0.1) @ mantic2026-05-24ubuntu
redhattigervnc-0:1.1.0-25.el6_10.132025-08-04redhat
redhatxorg-x11-server-0:1.20.11-22.el82024-05-22redhat
redhatxorg-x11-server-Xwayland-0:21.1.3-15.el82024-05-22redhat
redhatxorg-x11-server-0:1.20.11-24.el92024-04-30redhat
redhatxorg-x11-server-Xwayland-0:22.1.9-5.el92024-04-30redhat
redhattigervnc-0:1.13.1-2.el8_9.12024-01-10redhat
redhattigervnc-0:1.13.1-3.el9_3.32024-01-02redhat
redhattigervnc-0:1.12.0-15.el8_8.12023-11-28redhat
redhattigervnc-0:1.11.0-8.el8_4.32023-11-28redhat
redhattigervnc-0:1.9.0-15.el8_2.42023-11-21redhat
redhattigervnc-0:1.8.0-26.el7_92023-11-21redhat
redhattigervnc-0:1.12.0-14.el9_22023-11-21redhat
redhattigervnc-0:1.11.0-22.el9_0.32023-11-21redhat
redhattigervnc-0:1.12.0-6.el8_6.42023-11-21redhat
redhattigervnc-0:1.9.0-16.el8_1.42023-11-08redhat
redhatxorg-x11-server-0:1.20.4-24.el7_92023-11-08redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(3)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 13× in last 7d / 48× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-23 02:29 UTCEG score recompute
  2. 2026-07-22 23:16 UTCEG score recompute
  3. 2026-07-22 14:07 UTCEPSS rescore
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  5. 2026-07-21 15:23 UTCEPSS rescore
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  15. 2026-07-15 05:49 UTCOSV refresh
  16. 2026-07-15 01:59 UTCEPSS rescore
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  18. 2026-07-13 22:28 UTCEPSS rescore
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  1. 2026-07-07 13:45 UTCEPSS rescore
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  3. 2026-07-06 16:26 UTCEPSS rescore
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  5. 2026-07-06 02:22 UTCEPSS rescore
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  7. 2026-07-05 02:29 UTCEPSS rescore
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  9. 2026-07-01 15:05 UTCEPSS rescore
  10. 2026-06-30 23:21 UTCEPSS rescore
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  15. 2026-06-28 04:55 UTCEPSS rescore
  16. 2026-06-27 06:34 UTCOSV refresh
  17. 2026-06-27 03:07 UTCEPSS rescore
  18. 2026-06-25 13:48 UTCEPSS rescore
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  24. 2026-06-22 14:24 UTCEPSS rescore
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  26. 2026-06-21 14:55 UTCEPSS rescore
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  28. 2026-06-21 01:58 UTCEPSS rescore
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  30. 2026-06-19 19:24 UTCEPSS rescore
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  37. 2026-06-14 23:16 UTCEPSS rescore
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  40. 2026-06-12 23:11 UTCEPSS rescore
  41. 2026-06-11 13:59 UTCEPSS rescore
  42. 2026-06-10 22:17 UTCEPSS rescore
  43. 2026-06-10 13:21 UTCEPSS rescore
  44. 2026-06-09 16:47 UTCOSV refresh
  45. 2026-06-08 14:16 UTCEPSS rescore
  46. 2026-06-08 14:16 UTCEPSS rescore
  47. 2026-06-07 15:24 UTCEPSS rescore
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  49. 2026-06-06 13:46 UTCEPSS rescore
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  51. 2026-06-05 22:46 UTCEPSS rescore
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  71. 2026-05-26 07:18 UTCEPSS rescore
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  73. 2026-05-24 15:05 UTCEG score recompute
  74. 2026-05-24 15:05 UTCVendor advisory
  75. 2026-05-24 15:05 UTCGHSA enrichment

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2023-5367?
CVE-2023-5367 is a high vulnerability published on October 25, 2023. A out-of-bounds write flaw was found in the xorg-x11-server. This issue occurs due to an incorrect calculation of a buffer offset when copying data stored in the heap in the XIChangeDeviceProperty function in Xi/xiproperty.c and in RRChangeOutputProperty function in randr/rrproperty.c, allowing for…
When was CVE-2023-5367 disclosed?
CVE-2023-5367 was first published in the National Vulnerability Database on October 25, 2023, with the most recent update on June 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-5367 actively exploited?
CVE-2023-5367 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 46.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-5367?
CVE-2023-5367 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2023-5367?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-5367, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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