What is CVE-2021-1229?

CVE-2021-1229 is a medium-severity vulnerability in Cisco Nx-os Software, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 5.8/10. Published 2021-02-24.

How severe is CVE-2021-1229?

Medium severity. CVSS v3 base score is 5.8 out of 10.

Vulnerability in Cisco Nx-os Software

CVE-2021-1229

A vulnerability in ICMP Version 6 (ICMPv6) processing in Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a slow system memory leak, which over time could lead to a denial of service (DoS) condition. This vulne…

EPSS: 0.014 (68.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L.

Affected products

Cisco Nx-os Software — versions n/a
Cisco Mds_9148s
Cisco Mds_9250i
Cisco Mds_9706
Cisco Mds_9710
Cisco Nexus_1000_virtual_edge_for_vmware_vsphere
Cisco Nexus_1000v_switch_for_microsoft_hyper-v
Cisco Nexus_1000v_switch_for_vmware_vsphere
Cisco Nexus_3048
Cisco Nexus_31108pv-v

Weakness classification (CWE)

CWE-401 — Missing Release of Memory after Effective Lifetime

References

psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2021-1229?: CVE-2021-1229 is a medium-severity vulnerability in Cisco Nx-os Software, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 5.8/10. Published 2021-02-24.
How severe is CVE-2021-1229?: Medium severity. CVSS v3 base score is 5.8 out of 10.