CVE-2023-20178

CVE-2023-20178 This is PoC for Arbitrary File Delete vulnerability in Cisco Secure Client tested on 5.0.01242 and Cisco AnyConnect tested on 4.10.06079. When a user connect to vpn, vpndownloader.exe process is started in background and it will create directory in c:\windows\temp with default...

CVE-2025-20393

CVE-2025-20393 📌 Descripción general CVE-2025-20393 es una vulnerabilidad crítica de Ejecución Remota de Comandos RCE que afecta a los equipos Cisco Secure Email Gateway SEG y Cisco Secure Email and Web Manager SEWM que ejecutan Cisco AsyncOS. La vulnerabilidad existe debido a una validación de...

CVE-2026-20131-Post-Incident-Written-Report

CVE-2026-20131-Post-Incident-Written-Report This post-incident report analyzes the exploitation of CVE-2026-20131, a critical zero-day unauthenticated Remote Code Execution RCE vulnerability in Cisco Secure Firewall Management Center FMC. The document covers the initial intrusion vector via Java...

CVE-2026-20131

CVE-2026-20131 — Cisco Secure FMC Remote Code Execution Java Deserialization Severity: Critical CVSS 3.1: 10.0 CWE: CWE-502 — Deserialization of Untrusted Data Affected: Cisco Secure Firewall Management Center FMC Software Advisory: cisco-sa-fmc-rce-NKhnULJh Bug ID: CSCwt14636 Overview A...

Active exploitation of Cisco Secure Firewall Management Center vulnerabilities

Cisco Talos is actively tracking the exploitation of two vulnerabilities in Cisco's Secure Firewall Management Center FMC Software. First, CVE-2026-20079 is an authentication bypass vulnerability in unpatched instances of Cisco's Secure FMC Software, which allows an unauthenticated, remote attack...

cisco-CVE-2023-20075

Acerca de Investigador de seguridad: ly1g3, ly1g3attuta.io Huella GPG: https://keys.openpgp.org/vks/v1/by-fingerprint/5FE85CE4E8F675F5ABD2C0A33CE8BE447ED6D586 Resumen: Escalada local de privilegios y escape de shell CVE: CVE-2023-20075 Cronología: Descubierto - ly1g3 Reportado - ly1g3 Corregido -...

cisco-CVE-2023-20009

Acerca de Investigador de seguridad: ly1g3, ly1g3attuta.io Huella GPG: https://keys.openpgp.org/vks/v1/by-fingerprint/5FE85CE4E8F675F5ABD2C0A33CE8BE447ED6D586 Resumen: Ejecución remota de código - RCE desde archivo de configuración CVE: CVE-2023-20009 Cronología: Descubierto - ly1g3 Reportado -...

CVE-2026-20079

CVE-2026-20079 Cisco Secure FMC PoC Python proof of concept for the publicly documented Cisco Secure Firewall Management Center authentication-bypass-to-root-RCE chain in CVE-2026-20079. This is not a new vulnerability or independently developed exploit chain. It is a clean-room implementation of...

CVE-2026-20079

🚨 CVE-2026-20079 "Zero-Day crítico en Cisco FMC" Omisión crítica de autenticación que conduce a RCE root en Cisco Secure Firewall Management Center 📋 Resumen CVE-2026-20079 es una vulnerabilidad crítica en la interfaz web del software Cisco Secure Firewall Management Center FMC. Un atacante remot...

CVE-2026-20355

Multiple vulnerabilities in the Secure/Multipurpose Internet Mail Extensions S/MIME decryption functionality of Cisco Secure Email could allow an unauthenticated, remote attacker to recover plain text from encrypted email messages. These vulnerabilities are due to insufficient validation of messa...

CVE-2026-20354

Multiple vulnerabilities in the Secure/Multipurpose Internet Mail Extensions S/MIME decryption functionality of Cisco Secure Email could allow an unauthenticated, remote attacker to recover plain text from encrypted email messages. These vulnerabilities are due to insufficient validation of messa...

EUVD-2026-70211

Multiple vulnerabilities in the Secure/Multipurpose Internet Mail Extensions S/MIME decryption functionality of Cisco Secure Email could allow an unauthenticated, remote attacker to recover plain text from encrypted email messages. These vulnerabilities are due to insufficient validation of messa...

CVE-2026-20355 Cisco Secure Email S/MIME Ciphertext Decryption Vulnerabilty

Multiple vulnerabilities in the Secure/Multipurpose Internet Mail Extensions S/MIME decryption functionality of Cisco Secure Email could allow an unauthenticated, remote attacker to recover plain text from encrypted email messages. These vulnerabilities are due to insufficient validation of messa...

CVE-2026-20355

CVE-2026-20355 affects the S/MIME decryption functionality of Cisco Secure Email . The root cause is insufficient validation of message integrity , allowing an unauthenticated, remote attacker to use a machine-in-the-middle technique to intercept and modify traffic between email gateways and reco...

EUVD-2026-70210

Multiple vulnerabilities in the Secure/Multipurpose Internet Mail Extensions S/MIME decryption functionality of Cisco Secure Email could allow an unauthenticated, remote attacker to recover plain text from encrypted email messages. These vulnerabilities are due to insufficient validation of messa...

CVE-2026-20354 Cisco Secure Email S/MIME Ciphertext Decryption Vulnerabilty

Multiple vulnerabilities in the Secure/Multipurpose Internet Mail Extensions S/MIME decryption functionality of Cisco Secure Email could allow an unauthenticated, remote attacker to recover plain text from encrypted email messages. These vulnerabilities are due to insufficient validation of messa...

CVE-2026-20354

CVE-2026-20354 affects the S/MIME decryption functionality of Cisco Secure Email . The root cause is insufficient validation of message integrity , allowing an unauthenticated remote attacker to use a man-in-the-middle technique to intercept and modify traffic between email gateways. A successful...

Cisco Secure Email Secure/Multipurpose Internet Mail Extensions Ciphertext Decryption Vulnerabilities

Multiple vulnerabilities in the Secure/Multipurpose Internet Mail Extensions S/MIME decryption functionality of Cisco Secure Email could allow an unauthenticated, remote attacker to recover plain text from encrypted email messages. These vulnerabilities are due to insufficient validation of messa...

PT-2026-84815

Multiple vulnerabilities in the Secure/Multipurpose Internet Mail Extensions S/MIME decryption functionality of Cisco Secure Email could allow an unauthenticated, remote attacker to recover plain text from encrypted email messages. These vulnerabilities are due to insufficient validation of messa...

PT-2026-84814

Name of the Vulnerable Software and Affected Versions Cisco Secure Email affected versions not specified Description Insufficient validation of message integrity in the Secure/Multipurpose Internet Mail Extensions S/MIME decryption functionality allows an unauthenticated remote attacker to recove...