CVE-2022-44844
Published: 25 November 2022
Summary
CVE-2022-44844 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/setOpenVpnCfg function. The flaw is triggered through the pass parameter and received 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 containing shell metacharacters in the pass field, resulting in arbitrary command execution on the device. Successful exploitation grants full control over the router, enabling actions such as credential theft, traffic interception, persistence, or use of the device in further attacks.
Public proof-of-concept code demonstrating the injection has been published in GitHub repositories, but no vendor advisory or firmware patch addressing the issue appears among the referenced sources. The CVE maintains an EPSS score near 0.15, indicating sustained but not sharply escalating exploitation interest since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-47775
Vulnerability details
TOTOlink A7100RU V7.4cu.2313_B20191024 was discovered to contain a command injection vulnerability via the pass parameter in the setting/setOpenVpnCfg 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.