CVE-2022-41518
Published: 06 October 2022
Summary
CVE-2022-41518 is a critical-severity OS Command Injection (CWE-78) vulnerability in Totolink Nr1800X Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 5.4% 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 NR1800X firmware version V9.1.0u.6279_B20210910 contains a command injection vulnerability (CWE-78) in the UploadFirmwareFile function exposed at /cgi-bin/cstecgi.cgi. The flaw received a CVSS 3.1 score of 9.8, reflecting network-accessible exploitation without authentication or user interaction that can result in full compromise of confidentiality, integrity, and availability.
An unauthenticated remote attacker can supply crafted input to the firmware-upload endpoint and execute arbitrary operating-system commands on the device. Successful exploitation grants the attacker complete control over the router, enabling actions such as configuration changes, traffic interception, or persistence mechanisms.
The provided references consist of a technical write-up documenting the injection point but contain no vendor advisory, patch information, or mitigation guidance. The associated EPSS score has remained in a narrow band near 0.15 with no material post-disclosure rise.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-44711
Vulnerability details
TOTOLINK NR1800X V9.1.0u.6279_B20210910 was discovered to contain a command injection vulnerability via the UploadFirmwareFile function at /cgi-bin/cstecgi.cgi.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.