Critical severity · published Oct 26, 2026
CVE-2026-116504
TOTOLINK A950RG Cloud Upgrade upgrade.so setCloudUpgradeFW command injection
New
9.9
CVSS
1.5%
EPSS
No
On KEV
Description
A vulnerability has been found in TOTOLINK A950RG 4.1.2cu.5268_B20221104. This affects the function setCloudUpgradeFW of the file lib/cste_modules/upgrade.so of the component Cloud Upgrade. The manipulation of the argument FileName leads to command injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.5% · higher than 75% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
A9
A950RG · TOTOLINK
4.1.2cu.5268_B20221104 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-116504
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-116504
gist.github.com
https://gist.github.com/H3rmesk1t/c2f2dcfdb6238a7ddb8fb0622ad52948
vuldb.com
https://vuldb.com/cve/CVE-2026-116504
vuldb.com
https://vuldb.com/submit/1022553
vuldb.com
https://vuldb.com/vuln/426402
vuldb.com
https://vuldb.com/vuln/426402/cti
www.totolink.net
https://www.totolink.net/
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