CVE-2022-20708
Published: March 3, 2022
Official Description
A vulnerability 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 software, or cause a denial of service (DoS).
CISA KEV Advisory
Cisco Small Business RV Series Routers Stack-based Buffer Overflow Vulnerability
A vulnerability 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 software, or cause a denial of service (DoS).
Apply updates per vendor instructions.
Risk Analysis
This high-severity vulnerability in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers allows an attacker to execute arbitrary code or commands, elevate privileges, bypass authentication, or cause a denial of service. The high EPSS score of 0.13015 indicates a significant likelihood of exploitation, making this an urgent concern. This vulnerability is confirmed to be actively exploited in the wild.
Active exploitation of this vulnerability has been observed in the wild, and it is included in CISA's KEV catalog. The wide range of potential impacts, including remote code execution and authentication bypass, makes this a critical threat.
Apply the latest firmware updates from Cisco for the affected Small Business RV Series Routers. Regularly review and harden router configurations, including access controls and logging.
Technical Analysis
CVE-2022-20708 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2022-20708 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Affected Vendors & Products
Exploit & PoC Resources
All References (1)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2022-20708 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1