CVE-2021-43718

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under CISA-ADP (Vulnrichment) CVSS v3.1 (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 84% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: cisa-adp, epss
Trending — 5 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
16%
KEV
Not listed

Published

August 18, 2026

Last Modified

August 20, 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 10× in last 7d / 10× 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 22:52 UTCEPSS rescore
  2. 2026-08-20 22:52 UTCEPSS rescore
  3. 2026-08-20 14:25 UTCGHSA enrichment
  4. 2026-08-20 13:52 UTCEG score recompute▲ 5.30
  5. 2026-08-20 13:52 UTCGHSA enrichment
  6. 2026-08-20 13:51 UTCMITRE cvelistV5CVSS v3 → 5.3 · severity → MEDIUM
  7. 2026-08-19 17:01 UTCEPSS rescore
  8. 2026-08-18 19:23 UTCNVD update
  9. 2026-08-18 18:29 UTCEG score recompute
  10. 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 August 20, 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 84.2% 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

Explore the affected products and dependency analysis for CVE-2021-43718

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