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    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:Apr 15, 2022
    Last Modified:Nov 21, 2024
    EPS:Apr 15, 2022
    EPSS Score:0.00276
    CVSS Score:8.6

    Affected Products

    Vendor
    Cisco
    Product
    1100-4g Integrated Services Router
    Vendor
    Cisco
    Product
    1100-6g Integrated Services Router
    Vendor
    Cisco
    Product
    1101 Integrated Services Router
    Vendor
    Cisco
    Product
    1109 Integrated Services Router
    Vendor
    Cisco
    Product
    1111x Integrated Services Router
    Vendor
    Cisco
    Product
    111x Integrated Services Router
    Vendor
    Cisco
    Product
    1120 Integrated Services Router
    Vendor
    Cisco
    Product
    1131 Integrated Services Router
    Vendor
    Cisco
    Product
    1160 Integrated Services Router
    Vendor
    Cisco
    Product
    4221 Integrated Services Router
    Vendor
    Cisco
    Product
    4331 Integrated Services Router
    Vendor
    Cisco
    Product
    4431 Integrated Services Router
    Vendor
    Cisco
    Product
    4461 Integrated Services Router
    Vendor
    Cisco
    Product
    Asr 1001-x
    Vendor
    Cisco
    Product
    Asr 1002-x
    Vendor
    Cisco
    Product
    Catalyst 8000v Edge
    Vendor
    Cisco
    Product
    Catalyst 8300-1n1s-4t2x
    Vendor
    Cisco
    Product
    Catalyst 8300-1n1s-6t
    Vendor
    Cisco
    Product
    Catalyst 8300-2n2s-4t2x
    Vendor
    Cisco
    Product
    Catalyst 8300-2n2s-6t
    Vendor
    Cisco
    Product
    Catalyst 8500
    Vendor
    Cisco
    Product
    Catalyst 8500-4qc
    Vendor
    Cisco
    Product
    Catalyst 8500l
    Vendor
    Cisco
    Product
    Cloud Services Router 1000v
    Vendor
    Cisco
    Product
    Ios Xe

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High