CVE-2021-1620

Katalog CVE

CVSS 7.7 · High EPSS 1,1%

Kerentanan Assignment to Variable without Use pada cisco ios. Skor CVSS 3.1 7.7 (High) menurut NVD.

Deskripsi (NVD)

A vulnerability in the Internet Key Exchange Version 2 (IKEv2) support for the AutoReconnect feature of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker to exhaust the free IP addresses from the assigned local pool. This vulnerability occurs because the code does not release the allocated IP address under certain failure conditions. An attacker could exploit this vulnerability by trying to connect to the device with a non-AnyConnect client. A successful exploit could allow the attacker to exhaust the IP addresses from the assigned local pool, which prevents users from logging in and leads to a denial of service (DoS) condition.

Rincian

Terbit di NVD

23 September 2021

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-563: Assignment to Variable without Use
CWE-772: Missing Release of Resource after Effective Lifetime

EPSS (30 hari)

1,1% peluang dieksploitasi; lebih tinggi dari 63,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD. Ditampilkan 60 dari 689 konfigurasi; daftar lengkap ada di NVD.

Referensi dan perbaikan

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ikev2-ebFrwMPr patch · advisory vendor