CVE-2026-19656

CRITICALPre-NVD 9.99.9—
EchelonGraph scoreHIGH confidence

Score 9.9 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-12. a secondary CVSS source baseline 9.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
9.9EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.9Exploit: None knownExposed: 0

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

ScadaLTS 2.7.8.1 exposes a server-side method that lacks authorization checks, allowing any authenticated user (including one holding only low-privilege, read-only permissions) to execute arbitrary operating system commands on the host. Successful exploitation results in code execution in the context of the ScadaLTS server process (root), leading to full compromise of the underlying system.

CVSS v3
9.9
EG Score
9.9(high)
EG Risk
45(Track)
EG Risk 45/100SSVC: 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
Severity99% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
21%
KEV
Not listed

Published

August 12, 2026

Last Modified

August 18, 2026

Advisory Details (1)

Auto-updated Aug 18, 2026
No patch confirmed yet.
generic

ScadaLTS Multiple Vulnerabilities - Research Advisory | Tenable®

https://www.tenable.com/security/research/tra-2026-55

Vendor Advisories for CVE-2026-19656(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 56× in last 7d / 68× 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. 2026-08-20 22:55 UTCEPSS rescore
  2. 2026-08-20 19:46 UTCGHSA enrichment
  3. 2026-08-20 15:46 UTCGHSA enrichment
  4. 2026-08-20 11:42 UTCGHSA enrichment
  5. 2026-08-20 07:41 UTCGHSA enrichment
  6. 2026-08-20 03:40 UTCGHSA enrichment
  7. 2026-08-19 23:39 UTCGHSA enrichment
  8. 2026-08-19 19:37 UTCEG score recompute
  9. 2026-08-19 19:37 UTCGHSA enrichment
  10. 2026-08-19 17:03 UTCEPSS rescore
  11. 2026-08-19 15:36 UTCGHSA enrichment
  12. 2026-08-19 11:36 UTCGHSA enrichment
  13. 2026-08-19 07:35 UTCGHSA enrichment
  14. 2026-08-19 03:35 UTCGHSA enrichment
  15. 2026-08-18 23:35 UTCGHSA enrichment
  16. 2026-08-18 19:34 UTCGHSA enrichment
  17. 2026-08-18 15:33 UTCEG score recompute
  18. 2026-08-18 15:33 UTCGHSA enrichment
  19. 2026-08-18 13:48 UTCEPSS rescore
  20. 2026-08-18 12:53 UTCGHSA enrichment
  21. 2026-08-18 08:52 UTCGHSA enrichment
  22. 2026-08-18 04:51 UTCGHSA enrichment
  23. 2026-08-18 00:50 UTCGHSA enrichment
  24. 2026-08-17 20:47 UTCGHSA enrichment
  25. 2026-08-17 16:47 UTCEG score recompute
Show 43 more
  1. 2026-08-17 16:47 UTCGHSA enrichment
  2. 2026-08-17 13:47 UTCEPSS rescore
  3. 2026-08-17 12:46 UTCGHSA enrichment
  4. 2026-08-17 08:46 UTCGHSA enrichment
  5. 2026-08-17 04:46 UTCGHSA enrichment
  6. 2026-08-17 00:46 UTCGHSA enrichment
  7. 2026-08-16 20:46 UTCGHSA enrichment
  8. 2026-08-16 16:45 UTCEG score recompute
  9. 2026-08-16 16:45 UTCGHSA enrichment
  10. 2026-08-16 14:56 UTCEPSS rescore
  11. 2026-08-16 12:45 UTCGHSA enrichment
  12. 2026-08-16 08:44 UTCGHSA enrichment
  13. 2026-08-16 04:44 UTCEG score recompute
  14. 2026-08-16 04:44 UTCGHSA enrichment
  15. 2026-08-16 02:14 UTCEPSS rescore
  16. 2026-08-16 00:44 UTCGHSA enrichment
  17. 2026-08-15 20:44 UTCGHSA enrichment
  18. 2026-08-15 16:44 UTCGHSA enrichment
  19. 2026-08-15 12:44 UTCGHSA enrichment
  20. 2026-08-15 08:41 UTCGHSA enrichment
  21. 2026-08-15 04:41 UTCEG score recompute
  22. 2026-08-15 04:41 UTCGHSA enrichment
  23. 2026-08-15 01:30 UTCEPSS rescore
  24. 2026-08-15 00:40 UTCGHSA enrichment
  25. 2026-08-14 20:40 UTCGHSA enrichment
  26. 2026-08-14 16:40 UTCGHSA enrichment
  27. 2026-08-14 12:40 UTCGHSA enrichment
  28. 2026-08-14 08:40 UTCGHSA enrichment
  29. 2026-08-14 04:40 UTCGHSA enrichment
  30. 2026-08-14 00:40 UTCEG score recompute
  31. 2026-08-14 00:40 UTCGHSA enrichment
  32. 2026-08-13 22:00 UTCEPSS rescore
  33. 2026-08-13 20:39 UTCGHSA enrichment
  34. 2026-08-13 16:38 UTCGHSA enrichment
  35. 2026-08-13 12:20 UTCGHSA enrichment
  36. 2026-08-13 08:20 UTCGHSA enrichment
  37. 2026-08-13 04:20 UTCGHSA enrichment
  38. 2026-08-13 00:20 UTCEG score recompute
  39. 2026-08-13 00:20 UTCGHSA enrichment
  40. 2026-08-12 20:20 UTCEG score recompute
  41. 2026-08-12 19:46 UTCEG score recompute
  42. 2026-08-12 19:21 UTCEG score recompute
  43. 2026-08-12 19:20 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-19656?
CVE-2026-19656 is a critical vulnerability published on August 12, 2026. ScadaLTS 2.7.8.1 exposes a server-side method that lacks authorization checks, allowing any authenticated user (including one holding only low-privilege, read-only permissions) to execute arbitrary operating system commands on the host. Successful exploitation results in code execution in the…
When was CVE-2026-19656 disclosed?
CVE-2026-19656 was first published in the National Vulnerability Database on August 12, 2026, with the most recent update on August 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19656 actively exploited?
CVE-2026-19656 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 78.8% of all scored CVEs.
What is the CVSS score of CVE-2026-19656?
CVE-2026-19656 has a CVSS v3 base score of 9.9 (NVD).
How do I remediate CVE-2026-19656?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-19656, 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-2026-19656

Explore →

Is Your Infrastructure Affected by CVE-2026-19656?

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

Start Free Scan →Browse All CVEs