CVE-2021-34730: critical vulnerability in Cisco Small Business RV Series Router Firmware
Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Remote Command Execution and Denial of Service Vulnerability
Published · Updated
77Vexday Risk Score
Prioritize patching. It exploitation observed by VulnCheck and has a public proof of concept.
ssvc Actcvss 9.8epss 19%
from disclosure to weapon43 days
Published on NVDAug 18
1st PoC+43d
VulnCheck+308d
exploitation probability
19%top 3% of all CVEs
observed exploitation
yesVulnCheck
2 public exploit(s)
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 restart unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to improper validation of incoming UPnP traffic. An attacker could exploit this vulnerability by sending a crafted UPnP request to an affected device. A successful exploit could allow the attacker to execute arbitrary code as the root user on the underlying operating system or cause the device to reload, resulting in a DoS condition. Cisco has not released software updates that address this vulnerability.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Cisco · Cisco Small Business RV Series Router Firmwarepublic PoCs found — 2
githubgithub.com/badmonkey7/CVE-2021-34730★ 28vulncheckvulncheck.com/xdb/95e8a3fd1e67unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — Cisco Small Business RV Series Router Firmware
In the same product, most dangerous first.
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