CVE Feed

    Dashboard / CVE / CVE-2016-6381

    CVE-2016-6381

    Cisco IOS 12.4 and 15.0 through 15.6 and IOS XE 3.1 through 3.18 and 16.1 allow remote attackers to cause a denial of service (memory consumption or device reload) via fragmented IKEv1 packets, aka Bug ID CSCuy47382.

    Published:Oct 5, 2016
    Last Modified:Apr 12, 2025
    EPS:Oct 5, 2016
    EPSS Score:0.0126
    CVSS Score:7.5

    Affected Products

    Vendor
    Cisco
    Product
    Ios
    Vendor
    Cisco
    Product
    Ios Xe
    Vendor
    Cisco
    Product
    Ios Xe 16.1
    Vendor
    Cisco
    Product
    Ios Xe 3.3sg
    Vendor
    Cisco
    Product
    Ios Xe 3.3xo
    Vendor
    Cisco
    Product
    Ios Xe 3.4sg

    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-2026-20301 (CVSS 8.6) — A vulnerability in the Extensible Messaging Client Protocol (XMCP), also referred to as the External Client pr…
    CVE-2026-20125 (CVSS 7.7) — A vulnerability in the HTTP Server feature of Cisco IOS Software and Cisco IOS XE Software Release 3E could al…
    CVE-2026-20012 (CVSS 8.6) — A vulnerability in the Internet Key Exchange version 2 (IKEv2) feature of Cisco IOS Software, Cisco IOS XE Sof…
    CVE-2025-20363 (CVSS 9) — A vulnerability in the web services of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, Cisco…
    CVE-2025-20149 (CVSS 6.5) — A vulnerability in the CLI of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, local…
    CVE-2025-20327 (CVSS 7.7) — A vulnerability in the web UI of Cisco IOS Software could allow an authenticated, remote attacker with low pri…
    CVE-2025-20352 (CVSS 7.7) — A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco IOS Software and Cisco IOS…
    CVE-2025-20160 (CVSS 8.1) — A vulnerability in the implementation of the TACACS+ protocol in Cisco IOS Software and Cisco IOS XE Software …
    CVE-2025-20253 (CVSS 8.6) — A vulnerability in the IKEv2 feature of Cisco IOS Software, IOS XE Software, Secure Firewall ASA Software, and…
    CVE-2025-20239 (CVSS 8.6) — A vulnerability in the Internet Key Exchange Version 2 (IKEv2) feature of Cisco IOS Software, IOS XE Software,…

    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