CVE-2021-43718

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-08-18. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

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

An Authentication Bypass vulnerability exists in EPSON EH-TW5350 EPSON 150075647YWWV110, which could let a remote malicious user cause a Denial of Service via specially crafted series of HTTP..

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity53% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
31%
KEV
Not listed

Published

August 18, 2026

Last Modified

September 9, 2026

Advisory Details (1)

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

epson-eh-tw5350-advisories/CVE-2021-43718.md at master · dpfkdlemtp/epson-eh-tw5350-advisories · GitHub

https://github.com/dpfkdlemtp/epson-eh-tw5350-advisories/blob/master/CVE-2021-43718.md

Vendor Advisories for CVE-2021-43718(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 19× in last 7d / 91× 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 19:23 UTCEPSS rescore
  2. 2026-09-18 11:05 UTCEG score recompute
  3. 2026-09-18 11:05 UTCGHSA enrichment
  4. 2026-09-17 19:23 UTCEPSS rescore
  5. 2026-09-17 19:23 UTCEPSS rescore
  6. 2026-09-17 11:44 UTCEG score recompute
  7. 2026-09-17 11:44 UTCGHSA enrichment
  8. 2026-09-16 14:05 UTCEPSS rescore
  9. 2026-09-16 12:18 UTCEG score recompute
  10. 2026-09-16 12:18 UTCGHSA enrichment
  11. 2026-09-15 12:57 UTCEG score recompute
  12. 2026-09-15 12:57 UTCGHSA enrichment
  13. 2026-09-15 03:06 UTCEPSS rescore
  14. 2026-09-14 13:09 UTCEG score recompute
  15. 2026-09-14 13:09 UTCGHSA enrichment
  16. 2026-09-13 13:48 UTCEG score recompute
  17. 2026-09-13 13:48 UTCGHSA enrichment
  18. 2026-09-12 14:57 UTCEPSS rescore
  19. 2026-09-12 14:27 UTCGHSA enrichment
  20. 2026-09-11 15:06 UTCEG score recompute
  21. 2026-09-11 15:06 UTCGHSA enrichment
  22. 2026-09-11 14:49 UTCEPSS rescore
  23. 2026-09-11 09:33 UTCEPSS rescore
  24. 2026-09-10 15:44 UTCEG score recompute
  25. 2026-09-10 15:44 UTCGHSA enrichment
Show 70 more
  1. 2026-09-09 16:12 UTCGHSA enrichment
  2. 2026-09-09 03:34 UTCEG score recompute
  3. 2026-09-09 03:34 UTCGHSA enrichment
  4. 2026-09-08 21:56 UTCEPSS rescore
  5. 2026-09-08 04:01 UTCEG score recompute
  6. 2026-09-08 04:01 UTCGHSA enrichment
  7. 2026-09-07 15:58 UTCEPSS rescore
  8. 2026-09-07 04:40 UTCEG score recompute
  9. 2026-09-07 04:40 UTCGHSA enrichment
  10. 2026-09-06 13:45 UTCEPSS rescore
  11. 2026-09-06 04:30 UTCEG score recompute
  12. 2026-09-06 04:30 UTCGHSA enrichment
  13. 2026-09-05 15:25 UTCEPSS rescore
  14. 2026-09-05 05:09 UTCEG score recompute
  15. 2026-09-05 05:09 UTCGHSA enrichment
  16. 2026-09-04 13:57 UTCEPSS rescore
  17. 2026-09-04 05:47 UTCEG score recompute
  18. 2026-09-04 05:47 UTCGHSA enrichment
  19. 2026-09-04 05:03 UTCEPSS rescore
  20. 2026-09-03 06:08 UTCEG score recompute
  21. 2026-09-03 06:07 UTCGHSA enrichment
  22. 2026-09-02 14:09 UTCEPSS rescore
  23. 2026-09-02 06:45 UTCEG score recompute
  24. 2026-09-02 06:45 UTCGHSA enrichment
  25. 2026-09-01 13:50 UTCEPSS rescore
  26. 2026-09-01 07:22 UTCEG score recompute
  27. 2026-09-01 07:22 UTCGHSA enrichment
  28. 2026-09-01 03:33 UTCEPSS rescore
  29. 2026-08-31 07:59 UTCEG score recompute
  30. 2026-08-31 07:59 UTCGHSA enrichment
  31. 2026-08-30 19:14 UTCEPSS rescore
  32. 2026-08-30 19:14 UTCEPSS rescore
  33. 2026-08-30 08:38 UTCEG score recompute
  34. 2026-08-30 08:38 UTCGHSA enrichment
  35. 2026-08-30 01:19 UTCEPSS rescore
  36. 2026-08-29 09:15 UTCEG score recompute
  37. 2026-08-29 09:15 UTCGHSA enrichment
  38. 2026-08-28 21:37 UTCEPSS rescore
  39. 2026-08-28 09:50 UTCEG score recompute
  40. 2026-08-28 09:50 UTCGHSA enrichment
  41. 2026-08-27 14:22 UTCEPSS rescore
  42. 2026-08-27 10:07 UTCEG score recompute
  43. 2026-08-27 10:07 UTCGHSA enrichment
  44. 2026-08-26 14:43 UTCEPSS rescore
  45. 2026-08-26 10:44 UTCEG score recompute
  46. 2026-08-26 10:44 UTCGHSA enrichment
  47. 2026-08-25 13:46 UTCEPSS rescore
  48. 2026-08-25 11:23 UTCEG score recompute
  49. 2026-08-25 11:23 UTCGHSA enrichment
  50. 2026-08-24 14:13 UTCEPSS rescore
  51. 2026-08-24 11:57 UTCEG score recompute
  52. 2026-08-24 11:57 UTCGHSA enrichment
  53. 2026-08-23 12:35 UTCEG score recompute
  54. 2026-08-23 12:35 UTCGHSA enrichment
  55. 2026-08-23 00:16 UTCEPSS rescore
  56. 2026-08-22 13:14 UTCEG score recompute
  57. 2026-08-22 13:14 UTCGHSA enrichment
  58. 2026-08-21 23:46 UTCEPSS rescore
  59. 2026-08-21 13:53 UTCEG score recompute
  60. 2026-08-21 13:53 UTCGHSA enrichment
  61. 2026-08-20 22:52 UTCEPSS rescore
  62. 2026-08-20 22:52 UTCEPSS rescore
  63. 2026-08-20 14:25 UTCGHSA enrichment
  64. 2026-08-20 13:52 UTCEG score recompute▲ 5.30
  65. 2026-08-20 13:52 UTCGHSA enrichment
  66. 2026-08-20 13:51 UTCMITRE cvelistV5CVSS v3 → 5.3 · severity → MEDIUM
  67. 2026-08-19 17:01 UTCEPSS rescore
  68. 2026-08-18 19:23 UTCNVD update
  69. 2026-08-18 18:29 UTCEG score recompute
  70. 2026-08-18 18:28 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2021-43718?
CVE-2021-43718 is a medium vulnerability published on August 18, 2026. An Authentication Bypass vulnerability exists in EPSON EH-TW5350 EPSON 150075647YWWV110, which could let a remote malicious user cause a Denial of Service via specially crafted series of HTTP..
When was CVE-2021-43718 disclosed?
CVE-2021-43718 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-2021-43718 actively exploited?
CVE-2021-43718 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 69.1% of all scored CVEs.
What is the CVSS score of CVE-2021-43718?
CVE-2021-43718 has a CVSS v3.1 base score of 5.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2021-43718?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-43718, 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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