CVE-2026-18264

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-20. A secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.8EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.2%CVSS: 8.8Exploit: None knownExposed services: Not assessed

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

NoMachine getstat Command Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of NoMachine. Authentication is required to exploit this vulnerability.

The specific flaw exists within the web service, which listens on TCP port 4000 by default. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the service account. . Was ZDI-CAN-30634.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
40
EG Risk 40/100CISA SSVC

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
Severity88% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
1.2%
EPSS %ILE
68th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 20, 2026

Last Modified

September 1, 2026

Advisory Details (2)

Auto-updated Aug 20, 2026
No patch confirmed yet.
generic

Possible escalation of privileges by impersonating the nx user (CVE-2026-18264) – Knowledge Base

https://kb.nomachine.com/TR06X11869
generic

ZDI-26-483 - TrendAI™ Zero Day Initiative™ (ZDI)

https://www.zerodayinitiative.com/advisories/ZDI-26-483/

Vendor Advisories for CVE-2026-18264(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 23× in last 7d / 96× 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.

Showing the most recent 100 of 158 total refreshes for this CVE.

  1. 2026-10-05 10:05 UTCEG score recompute
  2. 2026-10-05 10:05 UTCGHSA enrichment
  3. 2026-10-04 23:21 UTCEPSS rescore
  4. 2026-10-04 20:53 UTCGHSA enrichment
  5. 2026-10-04 06:34 UTCGHSA enrichment
  6. 2026-10-03 17:22 UTCEG score recompute
  7. 2026-10-03 17:22 UTCGHSA enrichment
  8. 2026-10-03 14:25 UTCEPSS rescore
  9. 2026-10-03 04:10 UTCEG score recompute
  10. 2026-10-03 04:10 UTCGHSA enrichment
  11. 2026-10-02 14:50 UTCGHSA enrichment
  12. 2026-10-02 01:20 UTCEG score recompute
  13. 2026-10-02 01:20 UTCGHSA enrichment
  14. 2026-10-01 19:49 UTCEPSS rescore
  15. 2026-10-01 10:47 UTCGHSA enrichment
  16. 2026-09-30 21:36 UTCEG score recompute
  17. 2026-09-30 21:36 UTCGHSA enrichment
  18. 2026-09-30 15:02 UTCEPSS rescore
  19. 2026-09-30 08:17 UTCEG score recompute
  20. 2026-09-30 08:17 UTCGHSA enrichment
  21. 2026-09-29 15:20 UTCEPSS rescore
  22. 2026-09-28 21:38 UTCEG score recompute
  23. 2026-09-28 21:38 UTCGHSA enrichment
  24. 2026-09-28 13:51 UTCEPSS rescore
  25. 2026-09-28 05:41 UTCGHSA enrichment
Show 75 more
  1. 2026-09-27 16:28 UTCEG score recompute
  2. 2026-09-27 16:28 UTCGHSA enrichment
  3. 2026-09-27 13:47 UTCEPSS rescore
  4. 2026-09-27 03:17 UTCEG score recompute
  5. 2026-09-27 03:17 UTCGHSA enrichment
  6. 2026-09-26 15:58 UTCEPSS rescore
  7. 2026-09-25 02:32 UTCEG score recompute
  8. 2026-09-25 02:32 UTCGHSA enrichment
  9. 2026-09-24 13:20 UTCGHSA enrichment
  10. 2026-09-24 00:08 UTCEG score recompute
  11. 2026-09-24 00:08 UTCGHSA enrichment
  12. 2026-09-23 10:57 UTCGHSA enrichment
  13. 2026-09-22 21:45 UTCEG score recompute
  14. 2026-09-22 21:45 UTCGHSA enrichment
  15. 2026-09-22 08:34 UTCEG score recompute
  16. 2026-09-22 08:33 UTCGHSA enrichment
  17. 2026-09-21 19:22 UTCGHSA enrichment
  18. 2026-09-21 06:10 UTCEG score recompute
  19. 2026-09-21 06:10 UTCGHSA enrichment
  20. 2026-09-20 16:56 UTCGHSA enrichment
  21. 2026-09-20 03:31 UTCEG score recompute
  22. 2026-09-20 03:31 UTCGHSA enrichment
  23. 2026-09-19 14:19 UTCGHSA enrichment
  24. 2026-09-19 00:52 UTCEG score recompute
  25. 2026-09-19 00:52 UTCGHSA enrichment
  26. 2026-09-18 19:27 UTCEPSS rescore
  27. 2026-09-18 11:39 UTCGHSA enrichment
  28. 2026-09-17 22:27 UTCEG score recompute
  29. 2026-09-17 22:27 UTCGHSA enrichment
  30. 2026-09-17 09:14 UTCGHSA enrichment
  31. 2026-09-16 20:02 UTCEG score recompute
  32. 2026-09-16 20:02 UTCGHSA enrichment
  33. 2026-09-16 14:07 UTCEPSS rescore
  34. 2026-09-16 05:56 UTCEG score recompute
  35. 2026-09-16 05:56 UTCGHSA enrichment
  36. 2026-09-16 05:14 UTCEPSS rescore
  37. 2026-09-15 16:44 UTCGHSA enrichment
  38. 2026-09-15 03:31 UTCEG score recompute
  39. 2026-09-15 03:31 UTCGHSA enrichment
  40. 2026-09-14 14:18 UTCGHSA enrichment
  41. 2026-09-14 01:06 UTCEG score recompute
  42. 2026-09-14 01:06 UTCGHSA enrichment
  43. 2026-09-13 16:46 UTCEPSS rescore
  44. 2026-09-13 11:51 UTCGHSA enrichment
  45. 2026-09-12 22:39 UTCEG score recompute
  46. 2026-09-12 22:39 UTCGHSA enrichment
  47. 2026-09-12 15:00 UTCEPSS rescore
  48. 2026-09-12 09:27 UTCGHSA enrichment
  49. 2026-09-11 20:15 UTCEG score recompute
  50. 2026-09-11 20:15 UTCGHSA enrichment
  51. 2026-09-11 14:52 UTCEPSS rescore
  52. 2026-09-11 09:36 UTCEPSS rescore
  53. 2026-09-11 06:47 UTCGHSA enrichment
  54. 2026-09-10 17:35 UTCEG score recompute
  55. 2026-09-10 17:35 UTCGHSA enrichment
  56. 2026-09-10 09:34 UTCEPSS rescore
  57. 2026-09-10 04:23 UTCGHSA enrichment
  58. 2026-09-09 15:11 UTCGHSA enrichment
  59. 2026-09-09 01:59 UTCEG score recompute
  60. 2026-09-09 01:59 UTCGHSA enrichment
  61. 2026-09-08 22:00 UTCEPSS rescore
  62. 2026-09-07 22:43 UTCEG score recompute
  63. 2026-09-07 22:43 UTCGHSA enrichment
  64. 2026-09-07 16:01 UTCEPSS rescore
  65. 2026-09-07 09:31 UTCGHSA enrichment
  66. 2026-09-06 19:58 UTCEG score recompute
  67. 2026-09-06 19:58 UTCGHSA enrichment
  68. 2026-09-06 13:47 UTCEPSS rescore
  69. 2026-09-06 06:45 UTCGHSA enrichment
  70. 2026-09-05 17:33 UTCEG score recompute
  71. 2026-09-05 17:33 UTCGHSA enrichment
  72. 2026-09-05 04:20 UTCGHSA enrichment
  73. 2026-09-04 15:08 UTCEG score recompute
  74. 2026-09-04 15:08 UTCGHSA enrichment
  75. 2026-09-04 05:06 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-18264?
CVE-2026-18264 is a high vulnerability published on August 20, 2026. NoMachine getstat Command Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of NoMachine. Authentication is required to exploit this vulnerability. The specific flaw exists within the web service, which…
When was CVE-2026-18264 disclosed?
CVE-2026-18264 was first published on August 20, 2026, with the most recent update on September 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18264 actively exploited?
CVE-2026-18264 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.2% probability of exploitation in the next 30 days (68th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-18264?
CVE-2026-18264 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-18264?
No fix for CVE-2026-18264 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-18264 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-18264

Explore →

Is Your Infrastructure Affected by CVE-2026-18264?

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

Book a Demo →Browse All CVEs