What is CVE-2021-1439?

CVE-2021-1439 is a high-severity vulnerability in Cisco Aironet Access Point Software (Ios Xe Controller), classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.4/10. Published 2021-03-24.

How severe is CVE-2021-1439?

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

Buffer overflow in Cisco Aironet Access Point Software (Ios Xe Controller)

CVE-2021-1439

A vulnerability in the multicast DNS (mDNS) gateway feature of Cisco Aironet Series Access Points Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerabi…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (28.5th 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 (Ios Xe Controller) — versions n/a

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

20210324 Cisco Aironet Access Points FlexConnect Multicast DNS Denial of Service Vulnerability (vendor-advisory, x_refsource_CISCO)

Frequently asked questions

What is CVE-2021-1439?: CVE-2021-1439 is a high-severity vulnerability in Cisco Aironet Access Point Software (Ios Xe Controller), classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.4/10. Published 2021-03-24.
How severe is CVE-2021-1439?: High severity. CVSS v3 base score is 7.4 out of 10.