XSS in Cisco Application Extension Platform

CVE-2021-1157

Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers could allow an authenticated, remote attacker to conduct cross-site scripting (XSS) attacks against a user of the interface. The vulnerabilities are due to insufficient input validation by 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 script code in the context of the affected interface or access sensitive, browser-based information. To exploit these vulnerabilities, an attacker would need to have valid administrator credentials on the affected device.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.006 (42.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-1157?
CVE-2021-1157 is a medium-severity vulnerability in Cisco Application Extension Platform, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2021-01-13.
How severe is CVE-2021-1157?
Medium severity. CVSS v3 base score is 4.8 out of 10.