CVE-2021-43717

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-18. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: Elevated riskExposed: 0

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

An issue exists in pson EH-TW5350 Epson iProjection.apk v3.2.6. If you identify a projector equipped with an iProjection function, you can access the projector using hard-coded authentication information and control the projector maliciously.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
75(Attend)
EG Risk 75/100SSVC: Attend

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%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
34%
KEV
Not listed

Published

August 18, 2026

Last Modified

September 9, 2026

Advisory Details (1)

Auto-updated Sep 16, 2026
No patch confirmed yet.
generic

epson-eh-tw5350-advisories/CVE-2021-43717.md at master · dpfkdlemtp/epson-eh-tw5350-advisories · GitHub

https://github.com/dpfkdlemtp/epson-eh-tw5350-advisories/blob/master/CVE-2021-43717.md

Vendor Advisories for CVE-2021-43717(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 52× in last 7d / 224× 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 230 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2021-43717?
CVE-2021-43717 is a critical vulnerability published on August 18, 2026. An issue exists in pson EH-TW5350 Epson iProjection.apk v3.2.6. If you identify a projector equipped with an iProjection function, you can access the projector using hard-coded authentication information and control the projector maliciously.
When was CVE-2021-43717 disclosed?
CVE-2021-43717 was first published in the National Vulnerability Database on August 18, 2026, with the most recent update on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-43717 actively exploited?
CVE-2021-43717 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 65.6% of all scored CVEs.
What is the CVSS score of CVE-2021-43717?
CVE-2021-43717 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2021-43717?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-43717, 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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