CVE-2022-20825
Published: 15 June 2022
Summary
CVE-2022-20825 is a critical-severity Stack-based Buffer Overflow (CWE-121) vulnerability in Cisco Rv110W Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 10.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
A vulnerability exists in the web-based management interface of Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers. The issue stems from insufficient validation of user input in incoming HTTP packets, tracked under CWE-121 and CWE-787, and carries a CVSS 3.1 score of 9.8. No software updates addressing the flaw have been released by Cisco.
An unauthenticated remote attacker can exploit the weakness by sending a crafted HTTP request to the management interface. Successful exploitation grants the ability to execute arbitrary commands with root privileges on the device or to trigger an unexpected restart that produces a denial-of-service condition.
The official Cisco Security Advisory states that no patches are available and recommends following published workarounds or device-specific mitigation steps listed in the advisory. The EPSS score reached a modest peak of 0.0638 after disclosure before receding to its current value of 0.0439, indicating limited but detectable post-publication interest.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-26075
Vulnerability details
A vulnerability in the web-based management interface of Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers could allow an unauthenticated, remote attacker to execute arbitrary code or cause an affected device to restart unexpectedly, resulting in a denial of…
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service (DoS) condition. This vulnerability is due to insufficient user input validation of incoming HTTP packets. An attacker could exploit this vulnerability by sending a crafted request to the web-based management interface. A successful exploit could allow the attacker to execute arbitrary commands on an affected device using root-level privileges. Cisco has not released software updates that address this vulnerability.
- 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.
Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.