Buffer overflow in Cisco Application_extension_platform
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: 0.136 (96.0th 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 Application_extension_platform — versions 1.0.3.55
- Cisco Small Business Rv Series Router Firmware — versions n/a
- Cisco Rv110w_wireless-n_vpn_firewall
- Cisco Rv110w_wireless-n_vpn_firewall_firmware
- Cisco Rv130_vpn_router
- Cisco Rv130_vpn_router_firmware
- Cisco Rv130w_wireless-n_multifunction_vpn_router
- Cisco Rv130w_wireless-n_multifunction_vpn_router_firmware
- Cisco Rv215w_wireless-n_vpn_router
- Cisco Rv215w_wireless-n_vpn_router_firmware
Weakness classification (CWE)
Public proof-of-concept exploits
References
- psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-34730?
- CVE-2021-34730 is a critical-severity vulnerability in Cisco Application_extension_platform, 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.