Improper input validation in Cisco iOS 12.2(25)s
CVE-2020-3201
A vulnerability in the Tool Command Language (Tcl) interpreter of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, local attacker with privileged EXEC credentials to cause a denial of service (DoS) condition on an affected system. The vulnerability is due to insufficient input validation of data passed to the Tcl interpreter. An attacker could exploit this vulnerability by executing crafted Tcl arguments on an affected device. An exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (21.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 21.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Cisco iOS 12.2(25)s
- Cisco iOS — versions 12.4(15)t8, 15.1\(1\)t, 12.3(14)ym11
- Cisco iOS Xe — versions 3.2.0sg, 3.2.1sg, 3.2.2sg
Weakness classification (CWE)
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-tcl-dos-… (vendor-advisory, Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-3201?
- CVE-2020-3201 is a medium-severity vulnerability in Cisco iOS 12.2(25)s, classified under Improper Input Validation. CVSS score: 6.0/10. Published 2020-06-03.
- How severe is CVE-2020-3201?
- Medium severity. CVSS v3 base score is 6.0 out of 10.