Buffer overflow in Cisco Small Business Rv Series Router Firmware
CVE-2021-34730
A vulnerability in the Universal Plug-and-Play (UPnP) service 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 restar…
Vulnerability class: Buffer Overflow
EPSS: 0.263 (96.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Cisco Small Business Rv Series Router Firmware — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- 20210818 Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Remote Command Execution and Denial of Service Vulnerability (vendor-advisory, x_refsource_CISCO)
Frequently asked questions
- What is CVE-2021-34730?
- CVE-2021-34730 is a critical-severity vulnerability in Cisco Small Business Rv Series Router Firmware, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2021-08-18.
- How severe is CVE-2021-34730?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-34730 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.