CVE-2022-20707
Published: 10 February 2022
Summary
CVE-2022-20707 is a critical-severity Stack-based Buffer Overflow (CWE-121) vulnerability in Cisco Rv340 Firmware. Its CVSS base score is 10.0 (Critical).
Operationally, ranked in the top 0.8% 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-2022-20707 covers multiple vulnerabilities in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers. The issues are tracked under CWEs 121 and 787 and received a CVSS 3.1 score of 10.0, reflecting the potential for arbitrary code execution, privilege elevation, command execution, authentication bypass, execution of unsigned software, and denial of service.
An unauthenticated attacker with network access can trigger the flaws without user interaction or credentials, enabling full compromise of affected routers or service disruption. Public references include exploit code for authentication bypass and command injection as well as separate Zero Day Initiative reports confirming the same attack surface.
The primary Cisco Security Advisory supplies remediation guidance and is linked alongside the related ZDI entries. The associated EPSS score reached 0.8140 at peak and remains at that level, indicating sustained exploitation interest after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-25957
Vulnerability details
Multiple vulnerabilities in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker to do any of the following: Execute arbitrary code Elevate privileges Execute arbitrary commands Bypass authentication and authorization protections Fetch and run unsigned…
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software Cause denial of service (DoS) For more information about these vulnerabilities, see the Details section of this advisory.
- 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.