Critical severity · published May 5, 2026
CVE-2026-7823
Totolink A8000RU cstecgi.cgi setAppFilterCfg os command injection
9.8
CVSS
1.8%
EPSS
No
On KEV
Description
A security flaw has been discovered in Totolink A8000RU 7.1cu.643_b20200521. Affected is the function setAppFilterCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument enable results in os command injection. The attack may be launched remotely. The exploit has been released to the public and may 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)1.8% · 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-2026-7823
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-7823
github.com
https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_330/README.md
vuldb.com
https://vuldb.com/submit/807775
vuldb.com
https://vuldb.com/vuln/361075
vuldb.com
https://vuldb.com/vuln/361075/cti
www.totolink.net
https://www.totolink.net/
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