CVE-2023-20511

MEDIUMPre-NVD 6.46.4—
EchelonGraph scoreHIGH confidence

Score 6.4 from GitHub Security Advisory published 2026-08-31. a secondary CVSS source baseline 6.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.4Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Release of an invalid pointer in the AMD kernel mode driver (KMD) could allow a privileged attacker to create a double free condition potentially leading to arbitrary code execution.

CVSS v3
6.4
EG Score
6.4(high)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity64% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
14%
KEV
Not listed

Published

August 31, 2026

Last Modified

September 3, 2026

References (1)

Vendor Advisories for CVE-2023-20511(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 20× in last 7d / 60× 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. 2026-09-18 23:50 UTCEG score recompute
  2. 2026-09-18 23:50 UTCGHSA enrichment
  3. 2026-09-18 19:25 UTCEPSS rescore
  4. 2026-09-17 23:58 UTCEG score recompute
  5. 2026-09-17 23:58 UTCGHSA enrichment
  6. 2026-09-17 19:24 UTCEPSS rescore
  7. 2026-09-16 23:20 UTCEG score recompute
  8. 2026-09-16 23:20 UTCGHSA enrichment
  9. 2026-09-16 14:05 UTCEPSS rescore
  10. 2026-09-16 05:11 UTCEPSS rescore
  11. 2026-09-15 23:27 UTCEG score recompute
  12. 2026-09-15 23:27 UTCGHSA enrichment
  13. 2026-09-15 03:07 UTCEPSS rescore
  14. 2026-09-14 23:35 UTCGHSA enrichment
  15. 2026-09-13 23:32 UTCEG score recompute
  16. 2026-09-13 23:32 UTCGHSA enrichment
  17. 2026-09-13 16:44 UTCEPSS rescore
  18. 2026-09-12 23:40 UTCEG score recompute
  19. 2026-09-12 23:40 UTCGHSA enrichment
  20. 2026-09-12 14:58 UTCEPSS rescore
  21. 2026-09-11 23:48 UTCEG score recompute
  22. 2026-09-11 23:48 UTCGHSA enrichment
  23. 2026-09-11 09:34 UTCEPSS rescore
  24. 2026-09-10 23:55 UTCEG score recompute
  25. 2026-09-10 23:55 UTCGHSA enrichment
Show 35 more
  1. 2026-09-09 23:43 UTCGHSA enrichment
  2. 2026-09-08 23:29 UTCEG score recompute
  3. 2026-09-08 23:29 UTCGHSA enrichment
  4. 2026-09-08 21:57 UTCEPSS rescore
  5. 2026-09-07 16:28 UTCEG score recompute
  6. 2026-09-07 16:28 UTCGHSA enrichment
  7. 2026-09-07 15:59 UTCEPSS rescore
  8. 2026-09-06 16:36 UTCEG score recompute
  9. 2026-09-06 16:36 UTCGHSA enrichment
  10. 2026-09-06 13:45 UTCEPSS rescore
  11. 2026-09-05 16:44 UTCEG score recompute
  12. 2026-09-05 16:44 UTCGHSA enrichment
  13. 2026-09-05 15:25 UTCEPSS rescore
  14. 2026-09-04 16:50 UTCEG score recompute
  15. 2026-09-04 16:50 UTCGHSA enrichment
  16. 2026-09-04 13:58 UTCEPSS rescore
  17. 2026-09-04 13:57 UTCEPSS rescore
  18. 2026-09-04 05:04 UTCEPSS rescore
  19. 2026-09-03 16:57 UTCGHSA enrichment
  20. 2026-09-03 15:28 UTCGHSA enrichment
  21. 2026-09-02 15:35 UTCEG score recompute
  22. 2026-09-02 15:35 UTCGHSA enrichment
  23. 2026-09-02 14:09 UTCEPSS rescore
  24. 2026-09-01 15:43 UTCEG score recompute
  25. 2026-09-01 15:43 UTCGHSA enrichment
  26. 2026-09-01 15:02 UTCEG score recompute
  27. 2026-09-01 15:01 UTCGHSA enrichment
  28. 2026-09-01 13:51 UTCEPSS rescore
  29. 2026-09-01 04:39 UTCEG score recompute
  30. 2026-09-01 04:39 UTCGHSA enrichment
  31. 2026-09-01 04:04 UTCEG score recompute
  32. 2026-09-01 04:04 UTCGHSA enrichment
  33. 2026-08-31 19:28 UTCEG score recompute
  34. 2026-08-31 18:31 UTCEG score recompute
  35. 2026-08-31 18:29 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2023-20511?
CVE-2023-20511 is a medium vulnerability published on August 31, 2026. Release of an invalid pointer in the AMD kernel mode driver (KMD) could allow a privileged attacker to create a double free condition potentially leading to arbitrary code execution.
When was CVE-2023-20511 disclosed?
CVE-2023-20511 was first published in the National Vulnerability Database on August 31, 2026, with the most recent update on September 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-20511 actively exploited?
CVE-2023-20511 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 85.5% of all scored CVEs.
What is the CVSS score of CVE-2023-20511?
CVE-2023-20511 has a CVSS v3 base score of 6.4 (NVD).
How do I remediate CVE-2023-20511?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-20511, 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

Explore the affected products and dependency analysis for CVE-2023-20511

Explore →

Is Your Infrastructure Affected by CVE-2023-20511?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs