CVE-2022-48121
Published: 20 January 2023
Summary
CVE-2022-48121 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 5.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
The vulnerability CVE-2022-48121 is a command injection flaw (CWE-78) in the TOTOlink A7100RU router running firmware version V7.4cu.2313_B20191024. The issue resides in the setting/delStaticDhcpRules function and is triggered by unsanitized input supplied to the rsabits parameter.
Remote attackers can exploit the flaw over the network without authentication or user interaction. Successful exploitation grants the ability to execute arbitrary operating system commands, resulting in full control over the device and impacts to confidentiality, integrity, and availability as reflected in the CVSS 9.8 score.
Public references consist of GitHub repositories that document the vulnerability and include proof-of-concept material. The associated EPSS score is 0.149 with no material rise from a lower baseline.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-50833
Vulnerability details
TOTOlink A7100RU V7.4cu.2313_B20191024 was discovered to contain a command injection vulnerability via the rsabits parameter in the setting/delStaticDhcpRules 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.