Auth bypass in Cisco iOS Xe Software
CVE-2023-20186
A vulnerability in the Authentication, Authorization, and Accounting (AAA) feature of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker to bypass command authorization and copy files to or from the file system of an affected device using the Secure Copy Protocol (SCP). This vulnerability is due to incorrect processing of SCP commands in AAA command authorization checks. An attacker with valid credentials and level 15 privileges could exploit this vulnerability by using SCP to connect to an affected device from an external machine. A successful exploit could allow the attacker to obtain or change the configuration of the affected device and put files on or retrieve files from the affected device.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (54.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 54.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.008 · change: +0.002
Affected products
- Cisco iOS Xe Software — versions 3.7.0S, 3.7.1S, 3.7.2S
- Cisco iOS — versions 15.6\(2\)sp7, 15.2(4)ec2, 15.0(2)SE10a
- Cisco iOS Xe — versions 3.2.0se, 3.2.1se, 3.2.2se
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2023-20186?
- CVE-2023-20186 is a high-severity vulnerability in Cisco iOS Xe Software, classified under Improper Authorization. CVSS score: 8.0/10. Published 2023-09-27.
- How severe is CVE-2023-20186?
- High severity. CVSS v3 base score is 8.0 out of 10.