CVE-2026-54000

HIGHPre-NVD 7.07.0
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This high-severity CVE scores 7.0 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2% (3rd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
7.0EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.0Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

osquery is a SQL powered operating system instrumentation, monitoring, and analytics framework. Prior to 5.23.1, on Windows, a local unprivileged attacker can cause a heap buffer out-of-bounds write if there is a query of the processes table targeting a maliciously crafted process, due to unchecked PEB string lengths in process command-line and current-directory reads. If exploited successfully, this could allow a potential local privilege escalation from standard user to SYSTEM. This issue is fixed in version 5.23.1.

CVSS v3
7.0
EG Score
7.0HIGHmedium confidence
EG Risk
32
EG Risk 32/100

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 (value × EchelonGraph’s weight)
Severity70% × 45%
The EG Score, 7.0 of 10.
Exploitation0.1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
3rd
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 10, 2026

Last Modified

July 14, 2026

Advisory Details (4)

Auto-updated Jul 10, 2026
Patch available. Sources: github_release, github, github_commit, github_pr.
GitHub advisoryMentions a patch (unverified)

Heap buffer overflow via `processes` table (Windows) · Advisory · osquery/osquery · GitHub

https://github.com/osquery/osquery/security/advisories/GHSA-4r78-6hg6-33gg
GitHub release Patch Available

5.23.1

Patch available: osquery/osquery 5.23.1

https://github.com/osquery/osquery/releases/tag/5.23.1
GitHub pull request

Fix heap buffer overflow in Windows processes table (GHSA-4r78-6hg6-33gg)

Fix merged in osquery/osquery PR #8934 on 2026-06-17 — awaiting tagged release

https://github.com/osquery/osquery/pull/8934
GitHub commit

commit 3d457c412eb0 (osquery/osquery)

Fix landed in osquery/osquery commit 3d457c412eb0 — awaiting tagged release

https://github.com/osquery/osquery/commit/3d457c412eb0c986b0c37d8903edae8bc9f9e246

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 33× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 120 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 20 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  2. 2026-10-12 15:57 UTCEG score recompute
  3. 2026-10-11 19:40 UTCEG score recompute
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  6. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  7. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  8. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
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  10. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
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  12. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
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  14. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  15. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
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  17. 2026-10-01 15:12 UTCEG score recompute
  18. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
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  20. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  21. 2026-09-28 09:49 UTCEG score recompute
  22. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  23. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  24. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  25. 2026-09-24 11:13 UTCEG score recompute
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  1. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  2. 2026-09-23 05:46 UTCEG score recompute
  3. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  4. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  5. 2026-09-18 05:19 UTCEG score recompute
  6. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  7. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  8. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  9. 2026-09-13 23:41 UTCEG score recompute
  10. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  11. 2026-09-12 02:59 UTCEG score recompute
  12. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  13. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  14. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  15. 2026-09-08 02:55 UTCEG score recompute
  16. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  17. 2026-09-06 13:57 UTCEG score recompute
  18. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  19. 2026-09-05 21:45 UTCEG score recompute
  20. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  21. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  22. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  23. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  24. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  25. 2026-08-30 06:26 UTCEG score recompute
  26. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  27. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  28. 2026-08-27 21:41 UTCEG score recompute
  29. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  30. 2026-08-27 00:51 UTCEG score recompute
  31. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.2% · 4th percentile
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  33. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  34. 2026-08-24 22:03 UTCEG score recompute
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  37. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  38. 2026-08-22 01:29 UTCEG score recompute
  39. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.1% · 1st percentile
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  41. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  42. 2026-08-20 01:34 UTCEG score recompute
  43. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  44. 2026-08-17 23:38 UTCEG score recompute
  45. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.1% · 1st percentile
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  47. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.1% · 1st percentile
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  49. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.1% · 1st percentile
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  52. 2026-08-14 04:37 UTCEG score recompute
  53. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.1% · 1st percentile
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  55. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.1% · 1st percentile
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  59. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.1% · 1st percentile
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  61. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  62. 2026-08-08 00:39 UTCEG score recompute
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  64. 2026-08-06 13:47 UTCEPSS rescoreEPSS 0.1% · 1st percentile
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  66. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.1% · 1st percentile
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  68. 2026-08-04 10:39 UTCEPSS rescoreEPSS 0.1% · 1st percentile
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  73. 2026-07-30 21:49 UTCEG score recompute
  74. 2026-07-30 16:28 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  75. 2026-07-30 08:39 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-54000?
CVE-2026-54000 is a high-severity vulnerability; its CVE record was published on July 10, 2026. osquery is a SQL powered operating system instrumentation, monitoring, and analytics framework. Prior to 5.23.1, on Windows, a local unprivileged attacker can cause a heap buffer out-of-bounds write if there is a query of the processes table targeting a maliciously crafted process, due to unchecked…
When was the CVE record for CVE-2026-54000 published?
The CVE record for CVE-2026-54000 was published on July 10, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of July 14, 2026; the record at its source may have been updated since.
Is CVE-2026-54000 actively exploited?
CVE-2026-54000 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (3rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-54000?
CVE-2026-54000 has a CVSS base score of 7.0 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-54000?
A fix for CVE-2026-54000 is available: update to the fixed version the vendor names in its advisory.

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