CVE-2022-20682

Katalog CVE

CVSS 8.6 · High EPSS 1,3%

Kerentanan Unchecked Return Value to NULL Pointer Dereference pada cisco ios xe. Skor CVSS 3.1 8.6 (High) menurut NVD.

Deskripsi (NVD)

A vulnerability in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to inadequate input validation of incoming CAPWAP packets encapsulating multicast DNS (mDNS) queries. An attacker could exploit this vulnerability by connecting to a wireless network and sending a crafted mDNS query, which would flow through and be processed by the wireless controller. A successful exploit could allow the attacker to cause the affected device to crash and reload, resulting in a DoS condition.

Rincian

Terbit di NVD

15 April 2022

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

8.6 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-690: Unchecked Return Value to NULL Pointer Dereference
CWE-476: NULL Pointer Dereference

EPSS (30 hari)

1,3% peluang dieksploitasi; lebih tinggi dari 70,6% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD. Ditampilkan 60 dari 62 konfigurasi; daftar lengkap ada di NVD.

Referensi dan perbaikan

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-c9800-capwap-mdns-6PSn7gKU advisory vendor