CVE Feed

    Dashboard / CVE / CVE-2021-1424

    CVE-2021-1424

    A vulnerability in the ipsecmgr process of Cisco ASR 5000 Series Software (StarOS) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. This vulnerability is due to insufficient validation of incoming Internet Key Exchange Version 2 (IKEv2) packets. An attacker could exploit this vulnerability by sending specifically malformed IKEv2 packets to an affected device. A successful exploit could allow the attacker to cause the ipsecmgr process to restart, which would disrupt ongoing IKE negotiations and result in a temporary DoS condition.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

    Published:Nov 18, 2024
    Last Modified:Apr 15, 2026
    EPS:Nov 18, 2024
    EPSS Score:0.00642
    CVSS Score:5.3

    Affected Products

    Vendor
    Cisco
    Product
    Asr 5000 Series Software

    Exploits

    No exploit reference

    Related CVEs

    CVE-2018-0256 (CVSS 5.8) — A vulnerability in the peer-to-peer message processing functionality of Cisco Packet Data Network Gateway coul…
    CVE-2017-6612 (CVSS 8.6) — A vulnerability in the gateway GPRS support node (GGSN) of Cisco ASR 5000 Series Aggregation Services Routers …
    CVE-2017-6672 (CVSS 7.5) — A vulnerability in certain filtering mechanisms of access control lists (ACLs) for Cisco ASR 5000 Series Aggre…
    CVE-2017-3819 (CVSS 8.8) — A privilege escalation vulnerability in the Secure Shell (SSH) subsystem in the StarOS operating system for Ci…
    CVE-2016-9216 (CVSS 5.3) — An IKE Packet Parsing Denial of Service Vulnerability in the ipsecmgr process of Cisco ASR 5000 Software could…
    CVE-2016-9203 (CVSS 7.5) — A vulnerability in the Internet Key Exchange Version 2 (IKEv2) feature of Cisco ASR 5000 Series Software could…
    CVE-2016-6467 (CVSS 7.5) — A vulnerability in IPv6 packet fragment reassembly of StarOS for Cisco Aggregation Services Router (ASR) 5000 …
    CVE-2016-6466 (CVSS 7.5) — A vulnerability in the IPsec component of StarOS for Cisco ASR 5000 Series routers could allow an unauthentica…
    CVE-2016-1335 (CVSS 7.5) — The SSH implementation in Cisco StarOS before 19.3.M0.62771 and 20.x before 20.0.M0.62768 on ASR 5000 devices …
    CVE-2015-6382 (CVSS 5) — Cisco ASR 5000 devices with software 16.0(900) allow remote attackers to cause a denial of service (telnetd pr…

    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