Medium 6.3Published Jan 29, 2026

CVE-2026-1623Totolink A7000R cstecgi.cgi setUpgradeFW command injection

Updated under an hour ago (Oct 26, 2026, 3:40 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for Totolink A7000R

Exploited in the last 30 days

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.

CVSS: 6.3 MEDIUM (v3.1, CNA)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
Weakness (CWE): CWE-77, CWE-74
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Analyzed
Record last updated: Feb 23, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Totolink A7000R totolink:a7000r_firmware	4.1cu.4154	CNA record
totolink a7000r_firmware totolink:a7000r_firmware	4.1cu.4154	NVD

References

References

https://vuldb.com/?id.343382	vdb-entry, technical-description, third-party-advisory
https://vuldb.com/?ctiid.343382	signature, permissions-required, vdb-entry
https://vuldb.com/?submit.740767	third-party-advisory, vdb-entry
https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/04_RCE_setUpgradeFW_RCE.md	exploit, patch, third-party-advisory
https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/04_RCE_setUpgradeFW_RCE.md#poc	exploit, patch
https://www.totolink.net/	product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.