5
CVSSv2

CVE-2021-1236

Published: 13/01/2021 Updated: 22/05/2023
CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10
CVSS v3 Base Score: 5.3 | Impact Score: 1.4 | Exploitability Score: 3.9
VMScore: 445
Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N

Vulnerability Summary

Multiple Cisco products are affected by a vulnerability in the Snort application detection engine that could allow an unauthenticated, remote malicious user to bypass the configured policies on an affected system. The vulnerability is due to a flaw in the detection algorithm. An attacker could exploit this vulnerability by sending crafted packets that would flow through an affected system. A successful exploit could allow the malicious user to bypass the configured policies and deliver a malicious payload to the protected network.

Vulnerability Trend

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cisco ios_xe

cisco firepower management center 2.9.14.0

cisco firepower management center 2.9.15

cisco firepower management center 2.9.16

cisco firepower management center 2.9.17

cisco firepower management center 2.9.14.14

cisco firepower threat defense

snort snort

Vendor Advisories

Multiple security vulnerabilities were discovered in snort, a flexible Network Intrusion Detection System, which could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition or bypass filtering technology on an affected device and ex-filtrate data from a compromised host For the stable distribution (bullseye), these ...
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 this vulnerability by sending crafted packets that wo ...