CVE-2021-1414: cisco cisco small business rv series router firmware Deserialization of Untrusted Data
Vulnerability summary
CVE-2021-1414 is a medium (CVSS 6.5) Deserialization of Untrusted Data vulnerability in cisco cisco small business rv series router firmware. EPSS estimates a 1.86% chance of exploitation in the next 30 days, higher than 78.9% of scored vulnerabilities.
Timeline
- 08-04-2021PublishedVulnerability first disclosed.
- 08-11-2024Last modifiedVulnerability information updated.
Description
Multiple vulnerabilities in the web-based management interface of Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers could allow an authenticated, remote attacker to execute arbitrary code with elevated privileges equivalent to the web service process on an affected device. These vulnerabilities exist because HTTP requests are not properly validated. An attacker could exploit these vulnerabilities by sending a crafted HTTP request to the web-based management interface of an affected device. A successful exploit could allow the attacker to remotely execute arbitrary code on the device.
CVSS metrics
3 scores · 2 sources · 2 versions- NVDNIST6.3MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
EPSS trend
Probability
1.86%
Chance of exploitation in the next 30 days
Percentile
79%
Versus all other CVEs
30-day change
0.00 pp
From 1.86% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Cisco5 products
- cisco small business rv series router firmwaren/a
- rv340_firmware< 1.0.03.21
- rv340w_firmware< 1.0.03.21
- rv345_firmware< 1.0.03.21
- rv345p_firmware< 1.0.03.21
1 vendor · 5 products
References
2 links- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-rv34x-rce-8bfG2h6bVendor AdvisoryX Refsource CISCO