Is this vulnerability remotely exploitable?

Yes. As described, the attack can be carried out remotely if an attacker can reach the WebUploader `preview.php` endpoint over the network and send crafted data.

What level of access does an attacker need?

Typically only network access to the affected tpadmin instance is required. If the endpoint is publicly exposed and does not enforce authentication or strong access control, any external user may attempt exploitation.

What is the safest general fix pattern?

The safest pattern is to remove unsafe deserialization entirely from the upload/preview path, replacing it with explicit, typed parsing of simple formats and validating all incoming data against strict expectations before processing.

Severity:

HIGH RISK

(7.3)

Unsafe PHP Deserialization (CWE-502) in tpadmin WebUploader preview.php

CVE-2026-2113

Published:

Feb 7, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

Unsafe Deserialization

CWE:

CWE-20;CWE-502;CWE-434

Impact:

Remote Code Execution / Data Compromise

Severity:

HIGH RISK

(7.3)

CVSS Version:

3.1

Vulnerability Type

Category:

Unsafe Deserialization

CWE:

CWE-20;CWE-502;CWE-434

Impact:

Remote Code Execution / Data Compromise

Severity:

HIGH RISK

(7.3)

CVSS Version:

3.1

Catch This CVE While Code Is Being Written

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Ask AI for summary of CodeAnt

Unsafe PHP Deserialization (CWE-502) in tpadmin WebUploader preview.php

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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