CVE-2026-5691 | THREATINT

Description

A vulnerability has been found in Totolink A7100RU 7.4cu.2313_b20191024. This affects the function setFirewallType of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument firewallType leads to os command injection. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used.

PUBLISHED Reserved 2026-04-06 | Published 2026-04-06 | Updated 2026-04-07 | Assigner VulDB

MEDIUM: 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

HIGH: 7.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

HIGH: 7.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

7.5AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

Problem types

OS Command Injection

Command Injection

Product status

7.4cu.2313_b20191024

affected

Timeline

2026-04-06:	Advisory disclosed
2026-04-06:	VulDB entry created
2026-04-06:	VulDB entry last update

Credits

LtzHust2 (VulDB User) reporter

References

vuldb.com/vuln/355518 (VDB-355518 | Totolink A7100RU cstecgi.cgi setFirewallType os command injection) vdb-entry technical-description

vuldb.com/vuln/355518/cti (VDB-355518 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/submit/792962 (Submit #792962 | Totolink A7100RU 7.4cu.2313_b20191024 Command Injection) third-party-advisory

github.com/.../vuldb_new/blob/main/A7100RU/vul_189/README.md exploit

www.totolink.net/ product

cve.org (CVE-2026-5691)

nvd.nist.gov (CVE-2026-5691)

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