Vulnerability in Cisco 1100-4g Integrated Services Router
CVE-2022-20678
A vulnerability in the AppNav-XE feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. This vulnerability is due to the incorrect handling of certain TCP segments. An attacker could exploit this vulnerability by sending a stream of crafted TCP traffic at a high rate through an interface of an affected device. That interface would need to have AppNav interception enabled. A successful exploit could allow the attacker to cause the device to reload.
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: 0.010 (60.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 60.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Cisco 1100-4g Integrated Services Router
- Cisco 1100-6g Integrated Services Router
- Cisco 1101 Integrated Services Router
- Cisco 1109 Integrated Services Router
- Cisco 1111x Integrated Services Router
- Cisco 111x Integrated Services Router
- Cisco 1120 Integrated Services Router
- Cisco 1131 Integrated Services Router
- Cisco 1160 Integrated Services Router
- Cisco 4221 Integrated Services Router
Weakness classification (CWE)
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-appnav-x… (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2022-20678?
- CVE-2022-20678 is a high-severity vulnerability in Cisco 1100-4g Integrated Services Router, classified under CWE-413. CVSS score: 8.6/10. Published 2022-04-15.
- How severe is CVE-2022-20678?
- High severity. CVSS v3 base score is 8.6 out of 10.