Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2021-1473

78
FAUCET Score

CVE-2021-1473 describes multiple critical vulnerabilities in the web-based management interface of Cisco Small Business RV Series Routers, including models like the RV340 and RV345. With a CVSS score of 9.8, these flaws allow unauthenticated remote attackers to execute arbitrary commands or bypass authentication to upload files, leading to complete compromise of the affected devices. While not currently listed in CISA's KEV catalog, public exploit modules exist, and its high EPSS score (0.90786) indicates a significant likelihood of exploitation, despite limited community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.03.21CPE matchmatch criteria
cpe:2.3:o:cisco:rv340_firmware:*:*:*:*:*:*:*:*
< 1.0.03.21CPE matchmatch criteria
cpe:2.3:o:cisco:rv340w_firmware:*:*:*:*:*:*:*:*
< 1.0.03.21CPE matchmatch criteria
cpe:2.3:o:cisco:rv345_firmware:*:*:*:*:*:*:*:*
< 1.0.03.21CPE matchmatch criteria
cpe:2.3:o:cisco:rv345p_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
64.16%
Probability of exploitation in next 30 days
EPSS Percentile
99.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Metasploit: Cisco Small Business RV Series Authentication Bypass and Command Injection · Apr 7, 2021
This CVE's current EPSS score of 0.6416 is in the 97th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

packetstormsecurity.com / files/162238/Cisco-RV-Authentication-Bypass-Code-Execution.html
ExploitThird Party AdvisoryVDB Entry
seclists.org / fulldisclosure/2021/Apr/39
Mailing ListThird Party Advisory
tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-rv-bypass-inject-Rbhgvfdx
Vendor Advisory