CVE-2026-1623 | THREATINT

Description

A weakness has been identified in Totolink A7000R 4.1cu.4154. Impacted is the function setUpgradeFW of the file /cgi-bin/cstecgi.cgi. This manipulation of the argument FileName causes command injection. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks.

PUBLISHED Reserved 2026-01-29 | Published 2026-01-29 | Updated 2026-02-23 | Assigner VulDB

MEDIUM: 5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

MEDIUM: 6.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

MEDIUM: 6.3CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

6.5AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

Problem types

Command Injection

Injection

Product status

4.1cu.4154

affected

Timeline

2026-01-29:	Advisory disclosed
2026-01-29:	VulDB entry created
2026-01-30:	VulDB entry last update

Credits

xuanyu (VulDB User) reporter

References

vuldb.com/?id.343382 (VDB-343382 | Totolink A7000R cstecgi.cgi setUpgradeFW command injection) vdb-entry technical-description

vuldb.com/?ctiid.343382 (VDB-343382 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/?submit.740767 (Submit #740767 | TOTOLINK A7000R V4.1cu.4154 Command Injection) third-party-advisory

github.com/...ain/TOTOLINK/A7000R/04_RCE_setUpgradeFW_RCE.md exploit patch

www.totolink.net/ product

cve.org (CVE-2026-1623)

nvd.nist.gov (CVE-2026-1623)

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