Verification Bypass Vulnerability in EPSON EasyMP Network Updater
CVE-2021-43716

9.8CRITICAL

Key Information:

Vendor

EPSON

Status
EasyMP Network Updater
Vendor
CVE Published:
18 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-43716?

A verification bypass vulnerability has been identified in the EPSON EasyMP Network Updater, specifically in the version 1.20 of the product. This issue allows malicious actors to exploit weaknesses in the firmware update mechanism that utilizes encrypted firmware via USB. Attackers could potentially manipulate or inject unauthorized firmware updates, compromising the integrity of the device. Users are advised to assess their versions and make necessary updates to mitigate the risks associated with this vulnerability.

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2021-43716
Created by dpfkdlemtp

References

https://github.com/dpfkdlemtp/epson-eh-tw5350-advisories/...

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.