Buffer overflow in Cisco Small Business Rv Series Router Firmware

CVE-2021-1323

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.

Vulnerability class: Buffer Overflow

EPSS: 0.022 (80.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-1323?
CVE-2021-1323 is a high-severity vulnerability in Cisco Small Business Rv Series Router Firmware, classified under Stack-based Buffer Overflow. CVSS score: 7.2/10. Published 2021-02-04.
How severe is CVE-2021-1323?
High severity. CVSS v3 base score is 7.2 out of 10.