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CVE

CWE

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CVE-2026-5853

Published: Apr 9, 2026

Modified: Apr 9, 2026

PUBLISHED

CVSS v3.1

9.8

CRITICAL

Description

A security vulnerability has been detected in Totolink A7100RU 7.4cu.2313_b20191024. Affected by this vulnerability is the function setIpv6LanCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument addrPrefixLen leads to os command injection. The attack may be performed from remote. The exploit has been disclosed publicly and may be used.

Vendor	Product	Versions
Totolink	A7100RU	affected `7.4cu.2313_b20191024`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

VDB-356379 | Totolink A7100RU CGI cstecgi.cgi setIpv6LanCfg os command injection

vdb-entry

technical-description

VDB-356379 | CTI Indicators (IOB, IOC, TTP, IOA)

signature

permissions-required

Submit #791274 | Totolink A7100RU 7.4cu.2313_b20191024 Command Injection

third-party-advisory

https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_159/README.md

exploit

https://www.totolink.net/

product

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