CVE-2026-1623

MEDIUM 6.3

Totolink A7000R cstecgi.cgi setUpgradeFW command injection

CVSS Score

6.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-77 CWE-74
Vendor	totolink
Product	a7000r
Published	Jan 29, 2026
Last Updated	Feb 23, 2026

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CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Totolink / A7000R

4.1cu.4154

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/?id.343382 vuldb.com: https://vuldb.com/?ctiid.343382 vuldb.com: https://vuldb.com/?submit.740767 github.com: https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/04_RCE_setUpgradeFW_RCE.md github.com: https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/04_RCE_setUpgradeFW_RCE.md#poc totolink.net: https://www.totolink.net/

Credits

🔍 xuanyu (VulDB User)