What is CVE-2021-34740?

CVE-2021-34740 is a high-severity vulnerability in Cisco Aironet Access Point Software, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.4/10. Published 2021-09-23.

How severe is CVE-2021-34740?

High severity. CVSS v3 base score is 7.4 out of 10.

Vulnerability in Cisco Aironet Access Point Software

CVE-2021-34740

A vulnerability in the WLAN Control Protocol (WCP) implementation for Cisco Aironet Access Point (AP) software could allow an unauthenticated, adjacent attacker to cause a reload of an affected device, resulting in a denial of service (DoS…

EPSS: 0.001 (27.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.

Affected products

Cisco Aironet Access Point Software — versions n/a

Weakness classification (CWE)

CWE-401 — Missing Release of Memory after Effective Lifetime

References

20210922 Cisco Aironet Access Points WLAN Control Protocol Packet Buffer Leak Denial of Service Vulnerability (vendor-advisory, x_refsource_CISCO)

Frequently asked questions

What is CVE-2021-34740?: CVE-2021-34740 is a high-severity vulnerability in Cisco Aironet Access Point Software, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.4/10. Published 2021-09-23.
How severe is CVE-2021-34740?: High severity. CVSS v3 base score is 7.4 out of 10.