CVE Feed

    Dashboard / CVE / CVE-2024-20455

    CVE-2024-20455

    A vulnerability in the process that classifies traffic that is going to the Unified Threat Defense (UTD) component of Cisco IOS XE Software in controller mode could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability exists because UTD improperly handles certain packets as those packets egress an SD-WAN IPsec tunnel. An attacker could exploit this vulnerability by sending crafted traffic through an SD-WAN IPsec tunnel that is configured on an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. Note: SD-WAN tunnels that are configured with Generic Routing Encapsulation (GRE) are not affected by this vulnerability.

    Published:Sep 25, 2024
    Last Modified:Oct 24, 2024
    EPS:Sep 25, 2024
    EPSS Score:0.00481
    CVSS Score:8.6

    Affected Products

    Vendor
    Cisco
    Product
    Ios Xe
    Vendor
    Cisco
    Product
    Ios Xe Catalyst Sd-wan
    Vendor
    Cisco
    Product
    Ios Xe Sd-wan

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-20273 (CVSS 8.6) — As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XE Software eng…
    CVE-2026-20272 (CVSS 9.8) — As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XE Software eng…
    CVE-2026-20271 (CVSS 8.6) — As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XE Software eng…
    CVE-2026-20270 (CVSS 8.6) — As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XE Software eng…
    CVE-2026-20269 (CVSS 8.6) — As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XE Software eng…
    CVE-2026-20268 (CVSS 8.6) — As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XE Software eng…
    CVE-2026-20267 (CVSS 9) — As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XE Software eng…
    CVE-2025-20363 (CVSS 9) — A vulnerability in the web services of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, Cisco…
    CVE-2025-20338 (CVSS 6) — A vulnerability in the CLI of Cisco IOS XE Software could allow an authenticated, local attacker with administ…
    CVE-2025-20352 (CVSS 7.7) — A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco IOS Software and Cisco IOS…

    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