https://patchthecve.com/CVEs with upgrade or downgrade fix stepshttps://patchthecve.com/cve/CVE-2023-20246.htmlhttps://patchthecve.com/cve/CVE-2023-20246.htmlTue, 11 Aug 2026 19:33:44 +0000MEDIUM 5.8: Multiple Cisco products are affected by a vulnerability in Snort access control policies that could allow an unauthenticated, remote attacker to bypass the configured policies on an affected system. This vulnerability is due to a logic error that occurs when the access control policies are beinghttps://patchthecve.com/cve/CVE-2021-40114.htmlhttps://patchthecve.com/cve/CVE-2021-40114.htmlTue, 11 Aug 2026 19:37:30 +0000MEDIUM 6.8: Multiple Cisco products are affected by a vulnerability in the way the Snort detection engine processes ICMP traffic that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper memory resource managemenhttps://patchthecve.com/cve/CVE-2021-1495.htmlhttps://patchthecve.com/cve/CVE-2021-1495.htmlTue, 11 Aug 2026 19:37:30 +0000MEDIUM 5.8: Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured file policy for HTTP. The vulnerability is due to incorrect handling of specific HTTP header parameters. An attacker could exploit this vuhttps://patchthecve.com/cve/CVE-2021-1236.htmlhttps://patchthecve.com/cve/CVE-2021-1236.htmlTue, 11 Aug 2026 19:37:30 +0000MEDIUM 5.3: Multiple Cisco products are affected by a vulnerability in the Snort application detection engine that could allow an unauthenticated, remote attacker to bypass the configured policies on an affected system. The vulnerability is due to a flaw in the detection algorithm. An attacker could exploit thihttps://patchthecve.com/cve/CVE-2021-1224.htmlhttps://patchthecve.com/cve/CVE-2021-1224.htmlTue, 11 Aug 2026 19:37:30 +0000MEDIUM 5.8: Multiple Cisco products are affected by a vulnerability with TCP Fast Open (TFO) when used in conjunction with the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured file policy for HTTP. The vulnerability is due to incorrect detection of the HTTP paylhttps://patchthecve.com/cve/CVE-2021-1223.htmlhttps://patchthecve.com/cve/CVE-2021-1223.htmlTue, 11 Aug 2026 19:37:30 +0000HIGH 7.5: Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured file policy for HTTP. The vulnerability is due to incorrect handling of an HTTP range header. An attacker could exploit this vulnerabilityhttps://patchthecve.com/cve/CVE-2020-3299.htmlhttps://patchthecve.com/cve/CVE-2020-3299.htmlTue, 11 Aug 2026 19:33:44 +0000MEDIUM 5.8: Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured File Policy for HTTP. The vulnerability is due to incorrect detection of modified HTTP packets used in chunked responses. An attacker coulhttps://patchthecve.com/cve/CVE-2016-1417.htmlhttps://patchthecve.com/cve/CVE-2016-1417.htmlWed, 17 Jun 2026 00:41:56 +0000HIGH 8.8: Untrusted search path vulnerability in Snort 2.9.7.0-WIN32 allows remote attackers to execute arbitrary code and conduct DLL hijacking attacks via a Trojan horse tcapi.dll that is located in the same folder on a remote file share as a pcap file that is being processed.https://patchthecve.com/cve/CVE-2009-3641.htmlhttps://patchthecve.com/cve/CVE-2009-3641.htmlTue, 16 Jun 2026 23:12:04 +0000MEDIUM 4.3: Snort before 2.8.5.1, when the -v option is enabled, allows remote attackers to cause a denial of service (application crash) via a crafted IPv6 packet that uses the (1) TCP or (2) ICMP protocol.https://patchthecve.com/cve/CVE-2008-1804.htmlhttps://patchthecve.com/cve/CVE-2008-1804.htmlTue, 16 Jun 2026 22:52:31 +0000MEDIUM 6.8: preprocessors/spp_frag3.c in Sourcefire Snort before 2.8.1 does not properly identify packet fragments that have dissimilar TTL values, which allows remote attackers to bypass detection rules by using a different TTL for each fragment.https://patchthecve.com/cve/CVE-2007-1398.htmlhttps://patchthecve.com/cve/CVE-2007-1398.htmlTue, 16 Jun 2026 22:37:30 +0000HIGH 7.1: The frag3 preprocessor in Snort 2.6.1.1, 2.6.1.2, and 2.7.0 beta, when configured for inline use on Linux without the ip_conntrack module loaded, allows remote attackers to cause a denial of service (segmentation fault and application crash) via certain UDP packets produced by send_morefrag_packet ahttps://patchthecve.com/cve/CVE-2006-5276.htmlhttps://patchthecve.com/cve/CVE-2006-5276.htmlTue, 16 Jun 2026 22:30:52 +0000HIGH 10.0: Stack-based buffer overflow in the DCE/RPC preprocessor in Snort before 2.6.1.3, and 2.7 before beta 2; and Sourcefire Intrusion Sensor; allows remote attackers to execute arbitrary code via crafted SMB traffic.https://patchthecve.com/cve/CVE-2007-0251.htmlhttps://patchthecve.com/cve/CVE-2007-0251.htmlTue, 16 Jun 2026 22:35:12 +0000HIGH 7.8: Integer underflow in the DecodeGRE function in src/decode.c in Snort 2.6.1.2 allows remote attackers to trigger dereferencing of certain memory locations via crafted GRE packets, which may cause corruption of log files or writing of sensitive information into log files.https://patchthecve.com/cve/CVE-2006-6931.htmlhttps://patchthecve.com/cve/CVE-2006-6931.htmlTue, 16 Jun 2026 22:34:04 +0000MEDIUM 5.0: Algorithmic complexity vulnerability in Snort before 2.6.1, during predicate evaluation in rule matching for certain rules, allows remote attackers to cause a denial of service (CPU consumption and detection outage) via crafted network traffic, aka a "backtracking attack."https://patchthecve.com/cve/CVE-2003-0033.htmlhttps://patchthecve.com/cve/CVE-2003-0033.htmlTue, 16 Jun 2026 22:01:23 +0000HIGH 10.0: Buffer overflow in the RPC preprocessor for Snort 1.8 and 1.9.x before 1.9.1 allows remote attackers to execute arbitrary code via fragmented RPC packets.https://patchthecve.com/cve/CVE-2001-1558.htmlhttps://patchthecve.com/cve/CVE-2001-1558.htmlTue, 16 Jun 2026 21:56:30 +0000MEDIUM 5.0: Unknown vulnerability in IP defragmenter (frag2) in Snort before 1.8.3 allows attackers to cause a denial of service (crash).https://patchthecve.com/cve/CVE-2001-0669.htmlhttps://patchthecve.com/cve/CVE-2001-0669.htmlTue, 16 Jun 2026 21:54:43 +0000HIGH 7.5: Various Intrusion Detection Systems (IDS) including (1) Cisco Secure Intrusion Detection System, (2) Cisco Catalyst 6000 Intrusion Detection System Module, (3) Dragon Sensor 4.x, (4) Snort before 1.8.1, (5) ISS RealSecure Network Sensor 5.x and 6.x before XPU 3.2, and (6) ISS RealSecure Server Sensohttps://patchthecve.com/cve/CVE-2000-1226.htmlhttps://patchthecve.com/cve/CVE-2000-1226.htmlWed, 23 Sep 2026 09:10:01 +0000MEDIUM 5.0: Snort 1.6, when running in straight ASCII packet logging mode or IDS mode with straight decoded ASCII packet logging selected, allows remote attackers to cause a denial of service (crash) by sending non-IP protocols that Snort does not know about, as demonstrated by an nmap protocol scan.