CVE-2026-19812

TOTOLINK A800R product.so cstecgi.cgi UploadCustomModule stack-based overflow

Published: Aug 14, 2026Updated: Aug 14, 2026 Sources: CVE List NVDCWE-119

8.8HIGH

Description

A weakness has been identified in TOTOLINK A800R 4.1.2cu.5137_B20200730. This affects the function UploadCustomModule of the file /cgi-bin/cstecgi.cgi of the component product.so. This manipulation of the argument File causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

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Weaknesses

CWE-119 CWE-121

Affected Products

TOTOLINK

commercial·TWaka totolink corp.

A800R

Networking Infrastructure

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Initial Access

Privilege Escalation

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References

https://github.com/panda666-888/vuls/blob/main/totolink/a800r/UploadCustomModule.md

github.com

https://vuldb.com/cve/CVE-2026-19812

vuldb.com

https://vuldb.com/submit/869428

vuldb.com

and 3 more references View all →

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