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Medium severity · published Apr 6, 2026
CVE-2026-5679
Totolink A3300R cstecgi.cgi vsetTr069Cfg os command injection
5.5
CVSS
1.9%
EPSS
No
On KEV
Description
A security vulnerability has been detected in Totolink A3300R 17.0.0cu.557_B20221024. The impacted element is the function vsetTr069Cfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument stun_pass leads to os command injection. The exploit has been disclosed publicly and may be used.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Attack vector
Adjacent
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.9% · higher than 80% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
A3
A3300R · Totolink
17.0.0cu.557_B20221024 · source: vendor
Affected product
A3
A3300R
Totolink
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-5679
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-5679
github.com
https://github.com/Svigo-o/TOTOLINK-Vul/tree/main/totolink-a3300r-stun-pass-cmd-injection
vuldb.com
https://vuldb.com/submit/792650
vuldb.com
https://vuldb.com/submit/792798
vuldb.com
https://vuldb.com/vuln/355506
vuldb.com
https://vuldb.com/vuln/355506/cti
www.totolink.net
https://www.totolink.net/
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