Insufficient Data Authenticity in Tenda G1 Firmware Update Handler
CVE-2025-8980

7.5HIGH

Key Information:

Vendor

Tenda
Status
G1
Vendor
CVE Published:
14 August 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-8980?

A vulnerability identified in the Tenda G1 firmware update handler arises from insufficient verification of data authenticity within the 'check_upload_file' function. This flaw may allow remote attackers to manipulate firmware updates without adequate checks, potentially leading to unauthorized access or system compromise. While the complexity of exploitation is high and known publicly, the potential for misuse highlights the importance of immediate attention to this issue.

Affected Version(s)

G1 16.01.7.8(3660)

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-2025-8980 - Proof of Concept

References

https://vuldb.com/?id.319976
vdb-entrytechnical-description
https://vuldb.com/?ctiid.319976
signaturepermissions-required
https://vuldb.com/?submit.628605
third-party-advisory

CVSS V4

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

IOT_Res (VulDB User)
.
CVE-2025-8980 : Insufficient Data Authenticity in Tenda G1 Firmware Update Handler