Low severity · published Aug 30, 2026
CVE-2026-82555
TOTOLINK N600R Authentication cstecgi.cgi loginAuth random values
3.7
CVSS
0.7%
EPSS
No
On KEV
Description
A vulnerability has been found in TOTOLINK N600R 4.3.0cu.7866_B20220506. This vulnerability affects the function loginAuth of the file /web_cste/cgi-bin/cstecgi.cgi of the component Authentication Handler. Such manipulation leads to insufficiently random values. It is possible to launch the attack remotely. This attack is characterized by high complexity. It is stated that the exploitability is difficult. The exploit has been disclosed to the public and may be used.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 52% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
N6
N600R · TOTOLINK
4.3.0cu.7866_B20220506 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-82555
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-82555
github.com
https://github.com/b1uerry/cves/blob/main/TOTOLINK/N600R/TOTOLINK_N600R_predictable-token/poc.py
github.com
https://github.com/b1uerry/cves/tree/main/TOTOLINK/N600R/TOTOLINK_N600R_predictable-token
vuldb.com
https://vuldb.com/cve/CVE-2026-82555
vuldb.com
https://vuldb.com/submit/891698
vuldb.com
https://vuldb.com/vuln/397071
vuldb.com
https://vuldb.com/vuln/397071/cti
More from N600R
10.0
CVE-2026-79911
TOTOLINK N600R CGI cstecgi.cgi setSystemConfig stack-based overflow
9.8
CVE-2025-9935
A vulnerability was determined in TOTOLINK N600R 4.3.0cu.7866_B20220506
9.8
CVE-2025-51390
TOTOLINK N600R V4.3.0cu.7647_B20210106 was discovered to contain a command injection vulnerability via the pin parameter in the setWiFiWpsConfig function
9.8
CVE-2025-46060
Buffer Overflow vulnerability in TOTOLINK N600R v4.3.0cu.7866_B2022506 allows a remote attacker to execute arbitrary code via the UPLOAD_FILENAME component
9.8
CVE-2025-4496
A vulnerability was found in TOTOLINK T10, A3100R, A950RG, A800R, N600R, A3000RU and A810R 4.1.8cu.5241_B20210927