Vulnerability in Cisco 1120
CVE-2020-3234
A vulnerability in the virtual console authentication of Cisco IOS Software for Cisco 809 and 829 Industrial Integrated Services Routers (Industrial ISRs) and Cisco 1000 Series Connected Grid Routers (CGR1000) could allow an authenticated but low-privileged, local attacker to log in to the Virtual Device Server (VDS) of an affected device by using a set of default credentials. The vulnerability is due to the presence of weak, hard-coded credentials. An attacker could exploit this vulnerability by authenticating to the targeted device and then connecting to VDS through the device’s virtual console by using the static credentials. A successful exploit could allow the attacker to access the Linux shell of VDS as the root user.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (28.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 28.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Cisco 1120
- Cisco 1240
- Cisco 809
- Cisco 829
- Cisco iOS 12.2(60)ez16
- Cisco iOS — versions 15.6(3)m1b, 15.4\(3\)m5, 15.0(2)sg11a
Weakness classification (CWE)
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-iot-… (vendor-advisory, Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-3234?
- CVE-2020-3234 is a high-severity vulnerability in Cisco 1120, classified under Use of Hard-coded Credentials. CVSS score: 8.8/10. Published 2020-06-03.
- How severe is CVE-2020-3234?
- High severity. CVSS v3 base score is 8.8 out of 10.