Improper input validation in Cisco iOS Xe Software
CVE-2020-3516
A vulnerability in the web server authentication of Cisco IOS XE Software could allow an authenticated, remote attacker to crash the web server on the device. The vulnerability is due to insufficient input validation during authentication. An attacker could exploit this vulnerability by entering unexpected characters during a valid authentication. A successful exploit could allow the attacker to crash the web server on the device, which must be manually recovered by disabling and re-enabling the web server.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.017 (76.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 76.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000
Affected products
- Cisco iOS Xe Software
- Cisco iOS Xe — versions 17.2.1
Weakness classification (CWE)
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-WEB-UI-e… (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-3516?
- CVE-2020-3516 is a medium-severity vulnerability in Cisco iOS Xe Software, classified under Improper Input Validation. CVSS score: 4.3/10. Published 2020-09-24.
- How severe is CVE-2020-3516?
- Medium severity. CVSS v3 base score is 4.3 out of 10.