CVE-2026-8603

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-19. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

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

In ScadaBR version 1.2.0, an OS Command Injection vulnerability could allow an attacker to execute commands as root on the SCADA system.

CVSS v3
9.8
EG Score
9.8(medium)
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
Severity98% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
69%
KEV
Not listed

Published

May 19, 2026

Last Modified

July 23, 2026

Advisory Details (1)

Auto-updated Sep 4, 2026
Patch available. Sources: cisa.
cisa Patch Available

ScadaBR | CISA

https://www.cisa.gov/news-events/ics-advisories/icsa-26-139-03

Vendor Advisories for CVE-2026-8603(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 6× in last 7d / 99× 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 326 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-8603?
CVE-2026-8603 is a critical vulnerability published on May 19, 2026. In ScadaBR version 1.2.0, an OS Command Injection vulnerability could allow an attacker to execute commands as root on the SCADA system.
When was CVE-2026-8603 disclosed?
CVE-2026-8603 was first published in the National Vulnerability Database on May 19, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8603 actively exploited?
CVE-2026-8603 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 31.1% of all scored CVEs.
What is the CVSS score of CVE-2026-8603?
CVE-2026-8603 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-8603?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8603, 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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