CVE-2026-2331

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-03-06. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
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.

An attacker may perform unauthenticated read and write operations on sensitive filesystem areas via the AppEngine Fileaccess over HTTP due to improper access restrictions. A critical filesystem directory was unintentionally exposed through the HTTP-based file access feature, allowing access without authentication. This includes device parameter files, enabling an attacker to read and modify application settings, including customer-defined passwords. Additionally, exposure of the custom application directory may allow execution of arbitrary Lua code within the sandboxed AppEngine environment.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
58%
KEV
Not listed

Published

March 6, 2026

Last Modified

June 17, 2026

Advisory Details (5)

Auto-updated Sep 14, 2026
🔬 Proof of concept available. Patch available. Sources: cisa.
generic
https://www.sick.com/media/docs/9/19/719/special_information_sick_operating_guidelines_cybersecurity_by_sick_en_im0106719.pdf
generic
https://www.sick.com/.well-known/csaf/white/2026/sca-2026-0006.pdf
generic
https://www.sick.com/.well-known/csaf/white/2026/sca-2026-0006.json
generic🟡 PoC Available

Common Vulnerability Scoring System Version 3.1 Calculator

https://www.first.org/cvss/calculator/3.1
cisa Patch Available

ICS Recommended Practices | CISA

https://www.cisa.gov/resources-tools/resources/ics-recommended-practices

Weakness Classification(1)

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

Data Freshness Timeline

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

Frequently asked(5)

What is CVE-2026-2331?
CVE-2026-2331 is a critical vulnerability published on March 6, 2026. An attacker may perform unauthenticated read and write operations on sensitive filesystem areas via the AppEngine Fileaccess over HTTP due to improper access restrictions. A critical filesystem directory was unintentionally exposed through the HTTP-based file access feature, allowing access without…
When was CVE-2026-2331 disclosed?
CVE-2026-2331 was first published in the National Vulnerability Database on March 6, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-2331 actively exploited?
CVE-2026-2331 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 42.3% of all scored CVEs.
What is the CVSS score of CVE-2026-2331?
CVE-2026-2331 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-2331?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-2331, 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.

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