Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Heap Inspection Vulnerability

CVE-2026-20349 High CVSS 8.6 In-The-Wild Exploited
Beranda Advisories CVE-2026-20349

Ringkasan Kerentanan (Vulnerability Overview)

Rilis: 01 October 2026
Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) contain a heap inspection vulnerability that could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition.

Tindakan Mitigasi yang Wajib Diterapkan (Required Action)

Instruksi Keamanan untuk Pengelola TI / OPD
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Seluruh pengelola server dan aplikasi di lingkungan OPD Kabupaten Ciamis diimbau untuk segera mengaudit perangkat terdampak dan mengaplikasikan patch sebelum batas waktu mitigasi.

Produk & Versi Terdampak

Produk Versi Basis Batas Terdampak Status Keamanan
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16.1 — AFFECTED
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16.1.28 — AFFECTED
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16.2 — AFFECTED
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16.2.3 — AFFECTED
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16.2.7 — AFFECTED
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16.2.11 — AFFECTED
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16.2.13 — AFFECTED
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16.2.14 — AFFECTED
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16.3.3 — AFFECTED
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16.3 — AFFECTED

Threat Intelligence Matrix

CVE Identifier
CVE-2026-20349
Vendor / Project Cisco
Produk Terdampak Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD)
Skor CVSS
8.6 / 10.0
Status Eksploitasi AKTIF (In-The-Wild)
Kampanye Ransomware Tidak Diketahui
Automatable (Wormable) Unknown
Dampak Teknis Total
Sumber Intelijen CISA KEV

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