CVE-2021-34698: cisco asyncos

csirt@kutim:~/threat-intel/cve/CVE-2021-34698

CVSS 7.5 · High EPSS 1,4%

Kerentanan Missing Release of Memory after Effective Lifetime pada cisco asyncos. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

A vulnerability in the proxy service of Cisco AsyncOS for Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to exhaust system memory and cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper memory management in the proxy service of an affected device. An attacker could exploit this vulnerability by establishing a large number of HTTPS connections to the affected device. A successful exploit could allow the attacker to cause the system to stop processing new connections, which could result in a DoS condition. Note: Manual intervention may be required to recover from this situation.

Rincian

Terbit di NVD: 6 Oktober 2021
Terakhir diubah: 17 Juni 2026
Status NVD: Modified
CVSS 3.1: 7.5 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-401: Missing Release of Memory after Effective Lifetime
EPSS (30 hari): 1,4% peluang dieksploitasi; lebih tinggi dari 72,3% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
cisco	asyncos	Versi 12.0 hingga sebelum 12.0.3-005
cisco	asyncos	Versi 12.5 hingga sebelum 12.5.2-007
cisco	asyncos	Versi 14.0 hingga sebelum 14.0.1-014

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-dos-fmHdKswk advisory vendor

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:10 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.