Critical severity · published May 25, 2026
CVE-2026-9433
Totolink A8000RU Web Management cstecgi.cgi setMacFilterRules os command injection
9.8
CVSS
1.7%
EPSS
No
On KEV
Description
A weakness has been identified in Totolink A8000RU 7.1cu.643_b20200521. This issue affects the function setMacFilterRules of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. This manipulation of the argument enable causes os command injection. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.7% · higher than 78% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
A8
A8000RU · Totolink
7.1cu.643_b20200521 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-9433
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-9433
github.com
https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_354/README.md
vuldb.com
https://vuldb.com/submit/813906
vuldb.com
https://vuldb.com/vuln/365414
vuldb.com
https://vuldb.com/vuln/365414/cti
www.totolink.net
https://www.totolink.net/
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