Buffer overflow in Cisco iOS Xe Software
CVE-2022-20683
A vulnerability in the Application Visibility and Control (AVC-FNF) feature of Cisco IOS XE Software for Cisco Catalyst 9800 Series Wireless Controllers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient packet verification for traffic inspected by the AVC feature. An attacker could exploit this vulnerability by sending crafted packets from the wired network to a wireless client, resulting in the crafted packets being processed by the wireless controller. A successful exploit could allow the attacker to cause a crash and reload of the affected device, resulting in a DoS condition.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.015 (73.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 73.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
- Cisco iOS Xe Software
- Cisco iOS Xe — versions 3.15.1xbs, 3.15.2xbs, 16.7.2
Weakness classification (CWE)
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-c9800-fn… (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2022-20683?
- CVE-2022-20683 is a high-severity vulnerability in Cisco iOS Xe Software, classified under Buffer Underwrite. CVSS score: 8.6/10. Published 2022-04-15.
- How severe is CVE-2022-20683?
- High severity. CVSS v3 base score is 8.6 out of 10.