csirt@kutim:~/threat-intel/cve/CVE-2025-20127

Katalog CVE

CVSS 7.7 · High EPSS 0,67%

Kerentanan Improper Resource Shutdown or Release pada cisco secure firewall threat defense, cisco adaptive security appliance software. Skor CVSS 3.1 7.7 (High) menurut cisco.com.

Deskripsi (NVD)

A vulnerability in the TLS 1.3 implementation for a specific cipher for Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software for Cisco Firepower 3100 and 4200 Series devices could allow an authenticated, remote attacker to consume resources that are associated with incoming TLS 1.3 connections, which eventually could cause the device to stop accepting any new SSL/TLS or VPN requests. This vulnerability is due to the implementation of the TLS 1.3 Cipher TLS_CHACHA20_POLY1305_SHA256. An attacker could exploit this vulnerability by sending a large number of TLS 1.3 connections with the specific TLS 1.3 Cipher TLS_CHACHA20_POLY1305_SHA256. A successful exploit could allow the attacker to cause a denial of service (DoS) condition where no new incoming encrypted connections are accepted. The device must be reloaded to clear this condition. Note: These incoming TLS 1.3 connections include both data traffic and user-management traffic. After the device is in the vulnerable state, no new encrypted connections can be accepted.

Rincian

Terbit di NVD
14 Agustus 2025
Terakhir diubah
11 Agustus 2026
Status NVD
Analyzed
CVSS 3.1
7.7 (High), sumber cisco.com
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-404: Improper Resource Shutdown or Release
EPSS (30 hari)
0,67% peluang dieksploitasi; lebih tinggi dari 50,6% CVE lain

Produk dan versi terdampak

VendorProdukVersi terdampak
cisco secure firewall threat defense Versi 7.4.0
cisco secure firewall threat defense Versi 7.4.1
cisco secure firewall threat defense Versi 7.4.1.1
cisco secure firewall threat defense Versi 7.4.2
cisco secure firewall threat defense Versi 7.4.2.1
cisco secure firewall threat defense Versi 7.6.0
cisco adaptive security appliance software Versi 9.20.1
cisco adaptive security appliance software Versi 9.20.1.5
cisco adaptive security appliance software Versi 9.20.2
cisco adaptive security appliance software Versi 9.20.2.10
cisco adaptive security appliance software Versi 9.20.2.21
cisco adaptive security appliance software Versi 9.20.2.22
cisco adaptive security appliance software Versi 9.20.3
cisco adaptive security appliance software Versi 9.20.3.4
cisco adaptive security appliance software Versi 9.20.3.7
cisco adaptive security appliance software Versi 9.22.1.1

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:11 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.