CVE Feed

    Dashboard / CVE / CVE-2021-1565

    CVE-2021-1565

    Multiple vulnerabilities in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE Software for Cisco Catalyst 9000 Family Wireless Controllers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. These vulnerabilities are due to insufficient validation of CAPWAP packets. An attacker could exploit the vulnerabilities by sending a malformed CAPWAP packet to an affected device. A successful exploit could allow the attacker to cause the affected device to crash and reload, resulting in a DoS condition.

    Published:Sep 23, 2021
    Last Modified:Nov 21, 2024
    EPS:Sep 23, 2021
    EPSS Score:0.00238
    CVSS Score:8.6

    Affected Products

    Vendor
    Cisco
    Product
    Catalyst 9300-24p-a
    Vendor
    Cisco
    Product
    Catalyst 9300-24p-e
    Vendor
    Cisco
    Product
    Catalyst 9300-24s-a
    Vendor
    Cisco
    Product
    Catalyst 9300-24s-e
    Vendor
    Cisco
    Product
    Catalyst 9300-24t-a
    Vendor
    Cisco
    Product
    Catalyst 9300-24t-e
    Vendor
    Cisco
    Product
    Catalyst 9300-24u-a
    Vendor
    Cisco
    Product
    Catalyst 9300-24u-e
    Vendor
    Cisco
    Product
    Catalyst 9300-24ux-a
    Vendor
    Cisco
    Product
    Catalyst 9300-24ux-e
    Vendor
    Cisco
    Product
    Catalyst 9300-48p-a
    Vendor
    Cisco
    Product
    Catalyst 9300-48p-e
    Vendor
    Cisco
    Product
    Catalyst 9300-48s-a
    Vendor
    Cisco
    Product
    Catalyst 9300-48s-e
    Vendor
    Cisco
    Product
    Catalyst 9300-48t-a
    Vendor
    Cisco
    Product
    Catalyst 9300-48t-e
    Vendor
    Cisco
    Product
    Catalyst 9300-48u-a
    Vendor
    Cisco
    Product
    Catalyst 9300-48u-e
    Vendor
    Cisco
    Product
    Catalyst 9300-48un-a
    Vendor
    Cisco
    Product
    Catalyst 9300-48un-e
    Vendor
    Cisco
    Product
    Catalyst 9300-48uxm-a
    Vendor
    Cisco
    Product
    Catalyst 9300-48uxm-e
    Vendor
    Cisco
    Product
    Catalyst 9300l
    Vendor
    Cisco
    Product
    Catalyst 9300l-24p-4g-a
    Vendor
    Cisco
    Product
    Catalyst 9300l-24p-4g-e
    Vendor
    Cisco
    Product
    Catalyst 9300l-24p-4x-a
    Vendor
    Cisco
    Product
    Catalyst 9300l-24p-4x-e
    Vendor
    Cisco
    Product
    Catalyst 9300l-24t-4g-a
    Vendor
    Cisco
    Product
    Catalyst 9300l-24t-4g-e
    Vendor
    Cisco
    Product
    Catalyst 9300l-24t-4x-a
    Vendor
    Cisco
    Product
    Catalyst 9300l-24t-4x-e
    Vendor
    Cisco
    Product
    Catalyst 9300l-48p-4g-a
    Vendor
    Cisco
    Product
    Catalyst 9300l-48p-4g-e
    Vendor
    Cisco
    Product
    Catalyst 9300l-48p-4x-a
    Vendor
    Cisco
    Product
    Catalyst 9300l-48p-4x-e
    Vendor
    Cisco
    Product
    Catalyst 9300l-48t-4g-a
    Vendor
    Cisco
    Product
    Catalyst 9300l-48t-4g-e
    Vendor
    Cisco
    Product
    Catalyst 9300l-48t-4x-a
    Vendor
    Cisco
    Product
    Catalyst 9300l-48t-4x-e
    Vendor
    Cisco
    Product
    Catalyst 9300l Stack
    Vendor
    Cisco
    Product
    Catalyst 9400
    Vendor
    Cisco
    Product
    Catalyst 9400 Supervisor Engine-1
    Vendor
    Cisco
    Product
    Catalyst 9407r
    Vendor
    Cisco
    Product
    Catalyst 9410r
    Vendor
    Cisco
    Product
    Catalyst 9500
    Vendor
    Cisco
    Product
    Catalyst 9800-40
    Vendor
    Cisco
    Product
    Catalyst 9800-80
    Vendor
    Cisco
    Product
    Catalyst 9800-cl
    Vendor
    Cisco
    Product
    Catalyst 9800-l
    Vendor
    Cisco
    Product
    Catalyst 9800-l-c
    Vendor
    Cisco
    Product
    Catalyst 9800-l-f
    Vendor
    Cisco
    Product
    Catalyst 9800 Firmware
    Vendor
    Cisco
    Product
    Embedded Wireless Controller
    Vendor
    Cisco
    Product
    Ios Xe

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-415 Double Free

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2024-20259 (CVSS 8.6) — A vulnerability in the DHCP snooping feature of Cisco IOS XE Software could allow an unauthenticated, remote a…
    CVE-2023-20231 (CVSS 8.8) — A vulnerability in the web UI of Cisco IOS XE Software could allow an authenticated, remote attacker to perfor…
    CVE-2023-20029 (CVSS 4.4) — A vulnerability in the Meraki onboarding feature of Cisco IOS XE Software could allow an authenticated, local …
    CVE-2023-20081 (CVSS 6.8) — A vulnerability in the IPv6 DHCP (DHCPv6) client module of Cisco Adaptive Security Appliance (ASA) Software, C…
    CVE-2023-20066 (CVSS 6.5) — A vulnerability in the web UI of Cisco IOS XE Software could allow an authenticated, remote attacker to perfor…
    CVE-2023-20082 (CVSS 6.1) — A vulnerability in Cisco IOS XE Software for Cisco Catalyst 9300 Series Switches could allow an authenticated,…
    CVE-2023-20065 (CVSS 7.8) — A vulnerability in the Cisco IOx application hosting subsystem of Cisco IOS XE Software could allow an authent…
    CVE-2022-20864 (CVSS 4.6) — A vulnerability in the password-recovery disable feature of Cisco IOS XE ROM Monitor (ROMMON) Software for Cis…
    CVE-2022-20870 (CVSS 8.6) — A vulnerability in the egress MPLS packet processing function of Cisco IOS XE Software for Cisco Catalyst 3650…
    CVE-2022-20919 (CVSS 8.6) — A vulnerability in the processing of malformed Common Industrial Protocol (CIP) packets that are sent to Cisco…

    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