CVE-2022-26186
Published: 22 March 2022
Summary
CVE-2022-26186 is a critical-severity Command Injection (CWE-77) vulnerability in Totolink N600R Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 8.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
TOTOLINK N600R firmware version V4.3.0cu.7570_B20200620 contains a command injection vulnerability in the exportOvpn interface of cstecgi.cgi. The flaw is tracked as CVE-2022-26186 with a CVSS 3.1 score of 9.8 and is classified under CWE-77 improper neutralization of special elements used in a command.
An unauthenticated attacker with network access can supply crafted input to the affected endpoint and execute arbitrary operating-system commands. Successful exploitation grants full control over the device, allowing confidentiality, integrity, and availability impacts without any user interaction or credentials.
The EPSS score for this CVE rose from a low baseline to a peak of 0.2377 on 2026-04-29 before receding to the current value of 0.0679, indicating a period of increased exploitation interest after disclosure. Public references consist of technical write-ups demonstrating the injection vector but do not detail vendor patches or mitigation steps.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-30750
Vulnerability details
TOTOLINK N600R V4.3.0cu.7570_B20200620 was discovered to contain a command injection vulnerability via the exportOvpn interface at cstecgi.cgi.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.