Buffer Overflow Vulnerability in Tenda F453 from Tenda
CVE-2026-3169

8.7HIGH

Key Information:

Vendor

Tenda
Status
F453
Vendor
CVE Published:
25 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-3169?

A security vulnerability has been identified in the Tenda F453 router, specifically within the SafeEmailFilter functionality. The issue arises from improper handling of input in the fromSafeEmailFilter function within the httpd component. This flaw allows for a buffer overflow when the argument 'page' is manipulated, potentially enabling remote attackers to exploit the vulnerability. The publicly disclosed exploit poses a significant security risk, necessitating prompt attention and remediation from users of this device.

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Affected Version(s)

F453 1.0.0.3

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-2026-3169 - Proof of Concept

References

https://vuldb.com/?id.347676
vdb-entrytechnical-description
https://vuldb.com/?ctiid.347676
signaturepermissions-required
https://vuldb.com/?submit.759597
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

LtzHust (VulDB User)
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