CVE-2023-27231
Published: 28 March 2023
Summary
CVE-2023-27231 is a critical-severity Command Injection (CWE-77) vulnerability in Totolink A7100Ru Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 12.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
CVE-2023-27231 is a command injection vulnerability, tracked under CWE-77, that affects the TOTOlink A7100RU router running firmware version V7.4cu.2313_B20191024. The flaw resides in the downBw parameter processed by the /setting/setWanIeCfg endpoint and carries a CVSS 3.1 base score of 9.8.
Unauthenticated attackers with network access can supply crafted input to the affected parameter and execute arbitrary operating-system commands on the device. Successful exploitation grants full control over the router, allowing confidentiality, integrity, and availability impacts without requiring user interaction or credentials.
Public references consist of GitHub repositories that appear to contain proof-of-concept material; no vendor advisory or official patch information is provided in the available sources.
The EPSS score for this CVE rose from a low baseline to a peak of 0.3113 on 2025-01-22 before receding to the current value of 0.0361, indicating a period of increased exploitation interest after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-31011
Vulnerability details
TOTOlink A7100RU V7.4cu.2313_B20191024 was discovered to contain a command injection vulnerability via the downBw parameter at /setting/setWanIeCfg.
- 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.