RCE in Cisco Small Business Rv Series Router Firmware
CVE-2021-1473
Multiple vulnerabilities exist in the web-based management interface of Cisco Small Business RV Series Routers. A remote attacker could execute arbitrary commands or bypass authentication and upload files on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.644 (99.2th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.642 · newest: 0.644 · change: +0.002
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-rv-by… (vendor-advisory, Vendor Advisory)
- seclists.org/fulldisclosure/2021/Apr/39 (mailing-list, Mailing List, Third Party Advisory)
- packetstormsecurity.com/files/162238/Cisco-RV-Authentication-Bypass-Code-Execut… (Exploit, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-1473?
- CVE-2021-1473 is a medium-severity vulnerability in Cisco Small Business Rv Series Router Firmware, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.3/10. Published 2021-04-08.
- How severe is CVE-2021-1473?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2021-1473 known to be exploited?
- 9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.