Path Traversal in Cisco iOS Xe Software
CVE-2021-1435
A vulnerability in the web UI of Cisco IOS XE Software could allow an authenticated, remote attacker to inject arbitrary commands that can be executed as the root user. This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending a crafted request to the web UI of an affected device with arbitrary commands injected into a portion of the request. A successful exploit could allow the attacker to execute arbitrary commands as the root user.
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.079 (94.1th 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
- Cisco Ios Xe Software — versions n/a
- Cisco Ios_xe — versions 16.9.1, 16.9.1a, 16.9.1b
Weakness classification (CWE)
References
- psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-1435?
- CVE-2021-1435 is a high-severity vulnerability in Cisco iOS Xe Software, classified under Path Traversal. CVSS score: 7.2/10. Published 2021-03-24.
- How severe is CVE-2021-1435?
- High severity. CVSS v3 base score is 7.2 out of 10.