CVE-2021-1338: Cisco Small Business RV Series Routers Management Interface Remote Command Execution and Denial of Service Vulnerabilities
First published: Thu Feb 04 2021(Updated: )
Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, RV082, RV320, and RV325 Routers could allow an authenticated, remote attacker to execute arbitrary code or cause an affected device to restart unexpectedly. These vulnerabilities are due to improper validation of user-supplied input in the web-based management interface. An attacker could exploit these vulnerabilities by sending crafted HTTP requests 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 denial of service (DoS) condition. To exploit these vulnerabilities, an attacker would need to have valid administrator credentials on the affected device.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Rv016 Multi-wan Vpn Router Firmware | <=4.2.3.14 | |
| Cisco Rv016 Multi-wan Vpn Router | ||
| Cisco Rv042 Dual Wan Vpn Router Firmware | <=4.2.3.14 | |
| Cisco Rv042 Dual Wan Vpn Router | ||
| Cisco Rv042g Dual Gigabit Wan Vpn Router Firmware | <=4.2.3.14 | |
| Cisco Rv042g Dual Gigabit Wan Vpn Router | ||
| Cisco Rv082 Dual Wan Vpn Router Firmware | <=4.2.3.14 | |
| Cisco Rv082 Dual Wan Vpn Router | ||
| Cisco Rv320 Dual Gigabit Wan Vpn Router Firmware | <=1.5.1.11 | |
| Cisco Rv320 Dual Gigabit Wan Vpn Router | ||
| Cisco Rv325 Dual Gigabit Wan Vpn Router Firmware | <=1.5.1.11 | |
| Cisco Rv325 Dual Gigabit Wan Vpn Router |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2021-1338.
What is the severity level of CVE-2021-1338?
The severity level of CVE-2021-1338 is critical, with a severity value of 7.2.
Which Cisco routers are affected by CVE-2021-1338?
The Cisco Small Business RV016, RV042, RV042G, RV082, RV320, and RV325 Routers are affected by CVE-2021-1338.
What can an attacker do with CVE-2021-1338?
An authenticated, remote attacker can execute arbitrary code or cause an affected device to restart unexpectedly with CVE-2021-1338.
How can I fix CVE-2021-1338?
To fix CVE-2021-1338, it is recommended to update to the latest firmware version provided by Cisco and follow the mitigation steps outlined in the Cisco Security Advisory.
- collector/nvd-index
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/author
- agent/references
- agent/last-modified-date
- agent/title
- agent/weakness
- agent/severity
- agent/tags
- agent/description
- agent/first-publish-date
- agent/event
- vendor/cisco
- canonical/cisco rv016 multi-wan vpn router firmware
- version/cisco rv016 multi-wan vpn router firmware/4.2.3.14
- canonical/cisco rv016 multi-wan vpn router
- canonical/cisco rv042 dual wan vpn router firmware
- version/cisco rv042 dual wan vpn router firmware/4.2.3.14
- canonical/cisco rv042 dual wan vpn router
- canonical/cisco rv042g dual gigabit wan vpn router firmware
- version/cisco rv042g dual gigabit wan vpn router firmware/4.2.3.14
- canonical/cisco rv042g dual gigabit wan vpn router
- canonical/cisco rv082 dual wan vpn router firmware
- version/cisco rv082 dual wan vpn router firmware/4.2.3.14
- canonical/cisco rv082 dual wan vpn router
- canonical/cisco rv320 dual gigabit wan vpn router firmware
- version/cisco rv320 dual gigabit wan vpn router firmware/1.5.1.11
- canonical/cisco rv320 dual gigabit wan vpn router
- canonical/cisco rv325 dual gigabit wan vpn router firmware
- version/cisco rv325 dual gigabit wan vpn router firmware/1.5.1.11
- canonical/cisco rv325 dual gigabit wan vpn router