Vulnerability in Cisco Ios Xe Software
CVE-2023-20198
Cisco is providing an update for the ongoing investigation into observed exploitation of the web UI feature in Cisco IOS XE Software. We are updating the list of fixed releases and adding the Software Checker. Our investigation has determi…
EPSS: 0.940 (99.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Cisco Ios Xe Software — versions 16.1.1, 16.1.2, 16.1.3
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Verify that instances of Cisco IOS XE Web UI are in compliance with BOD 23-02 and apply mitigations per vendor instructions. For affected products (Cisco IOS XE Web UI exposed to the internet or to untrusted networks), follow vendor instructions to determine if a system may have been compromised and immediately report positive findings to CISA.
Public proof-of-concept exploits
References
Frequently asked questions
- What is CVE-2023-20198?
- CVE-2023-20198 is a critical-severity vulnerability in Cisco Ios Xe Software, classified under Unprotected Alternate Channel. CVSS score: 10.0/10. Published 2023-10-16.
- How severe is CVE-2023-20198?
- Critical severity. CVSS v3 base score is 10.0 out of 10.
- Is CVE-2023-20198 known to be exploited?
- Yes. CVE-2023-20198 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-10-16), indicating it is being actively exploited. 108 public proof-of-concept repositories are indexed.