CVE-2022-44843
Published: 25 November 2022
Summary
CVE-2022-44843 is a critical-severity OS Command Injection (CWE-78) vulnerability in Totolink A7100Ru 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 A7100RU routers running firmware version V7.4cu.2313_B20191024 contain an OS command injection vulnerability (CWE-78) in the setting/setOpenVpnClientCfg function. The flaw is triggered by unsanitized input to the port parameter and carries a CVSS 3.1 score of 9.8, reflecting network-accessible exploitation without authentication or user interaction.
An unauthenticated remote attacker can submit a crafted HTTP request to the affected endpoint and execute arbitrary operating-system commands on the device. Successful exploitation grants full control over the router, enabling actions that impact confidentiality, integrity, and availability.
Public proof-of-concept code demonstrating the injection has been published on GitHub. The CVE’s EPSS score has remained near 0.15 with only minor fluctuation between its recorded peak and current value, indicating sustained but not sharply increasing exploitation interest since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-47774
Vulnerability details
TOTOlink A7100RU V7.4cu.2313_B20191024 was discovered to contain a command injection vulnerability via the port parameter in the setting/setOpenVpnClientCfg function.
- 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.