Cisco Secure Firewall Threat Defense 安全漏洞

Cisco Secure Firewall Threat Defense is an integrated firewall platform developed by the American company Cisco. There is a security vulnerability present in Cisco Secure Firewall Threat Defense. This vulnerability stems from a memory management logic error during the execution of Snort 3 SSL...

PT-2026-23025

Multiple Cisco products are affected by a vulnerability in the Snort 3 detection engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection. This vulnerability is due to incomplete error checking...

PT-2026-23018

Multiple Cisco products are affected by a vulnerability in the Snort 3 VBA feature that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to crash. This vulnerability is due to improper range checking when decompressing VBA data, which is user controlled. An...

Regular Expression Denial of Service Induced by Backreferences

This paper presents the first systematic study of denial-of-service vulnerabilities in Regular Expressions with Backreferences REwB. We introduce the Two-Phase Memory Automaton 2PMFA, an automaton model that precisely captures REwB semantics. Using this model, we derive necessary conditions under...

PT-2026-7483

Heads up, folks: Microsoft's February 2026 Patch Tuesday is out, dropping 55 vulnerability fixes across various products. Among these is CVE-2025-59498, which Microsoft has explicitly marked as Critical. This update is significant, addressing a broad spectrum of security issues. While the specifi...

Exploit for Out-of-bounds Read in Openssl

CVE-2014-0160 Lab dựng lab sử dụng Heartbleed để leak memory...

Cisco Snort _bnfa_search_csparse_nfa Use-After-Free Remote Code Execution Vulnerability

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Cisco Snort. Authentication is not required to exploit this vulnerability. The specific flaw exists within the bnfasearchcsparsenfa method. The issue results from the lack of validating the existence...

Cisco Snort _bnfa_search_csparse_nfa Out-Of-Bounds Read Information Disclosure Vulnerability

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Cisco Snort. Authentication is not required to exploit this vulnerability. The specific flaw exists within the bnfasearchcsparsenfa method. The issue results from the lack of proper validatio...

Cisco Firepower Threat Defense Software Snort 3 Detection Engine DoS (cisco-sa-ftd-snort3-uAnUntcV)

According to its self-reported version, Cisco Firepower Threat Defense FTD Software is affected by a vulnerability. - A vulnerability in the TLS 1.3 implementation of the Cisco Firepower Threat Defense FTD Software could allow an unauthenticated, remote attacker to cause the Snort 3 detection...

Cisco IOS XE Software Unified Threat Defense Snort Intrusion Prevention System Engine Multiple Vulnerabilities (cisco-sa-snort3-dcerpc-vulns-J9HNF4tH)

According to its self-reported version, Cisco IOS-XE Software is affected by the following vulnerabilities: - A vulnerability in the processing of DCE/RPC requests that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to leak sensitive information or to restar...

Cisco Firepower Threat Defense (FTD) Software Multiple Vulnerabilities (cisco-sa-snort3-dcerpc-vulns-J9HNF4tH)

According to its self-reported version, Cisco Secure Firewall Threat Defense FTD Software is affected by the following vulnerabilities: - A vulnerability in the processing of DCE/RPC requests that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to leak...

Cisco Meraki Multiple Vulnerabilities (cisco-sa-snort3-dcerpc-vulns-J9HNF4tH)

According to its self-reported version, the Cisco Meraki device is affected by the following vulnerabilities.: - A vulnerability in the processing of DCE/RPC requests that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to leak sensitive information or to...

Suricata IDPE 8.0.3

Suricata is a network intrusion detection and prevention engine developed by the Open Information Security Foundation and its supporting vendors. The engine is multi-threaded and has native IPv6 support. It's capable of loading existing Snort rules and signatures and supports the Barnyard and...

CVE-2001-1558

Unknown vulnerability in IP defragmenter frag2 in Snort before 1.8.3 allows attackers to cause a denial of service crash...

CVE-2026-20027

Multiple Cisco products are affected by a vulnerability in the processing of DCE/RPC requests that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to leak sensitive information or to restart, resulting in an interruption of packet inspection. This vulnerabili...

CVE-2026-20026

Multiple Cisco products are affected by a vulnerability in the processing of DCE/RPC requests that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to leak sensitive information or to restart, resulting in an interruption of packet inspection. This vulnerabili...

CVE-2026-20027

Multiple Cisco products are affected by a vulnerability in the processing of DCE/RPC requests that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to leak sensitive information or to restart, resulting in an interruption of packet inspection. This vulnerabili...

CVE-2026-20026 Multiple Cisco Products Snort 3 DCERPC Vulnerabilities

Multiple Cisco products are affected by a vulnerability in the processing of DCE/RPC requests that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to leak sensitive information or to restart, resulting in an interruption of packet inspection. This vulnerabili...

CVE-2026-20026

CVE-2026-20026 (and related 20027) affect Cisco Snort 3 in multiple Cisco products (e.g., IOS XE, Meraki, FTD). Root cause: buffer handling error during DCE/RPC request processing leading to a use-after-free read (20026) and, in another variant, a possible out-of-bounds read (20027). Impacts: una...

CVE-2026-20027 Cisco Snort DCERPC Stub Data Out of Bounds Read

Multiple Cisco products are affected by a vulnerability in the processing of DCE/RPC requests that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to leak sensitive information or to restart, resulting in an interruption of packet inspection. This vulnerabili...