PT-2026-23024 · Cisco · Cisco Snort 3 Detection Engine

Jason Crowder · Publicado 2026-03-04 · Atualizado 2026-03-04 · CVE-2026-20066

Positive Technologies (AI Summary)

CVSS v3.1

5.8

Média

Vetor base

AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

Name of the Vulnerable Software and Affected Versions Cisco Snort 3 Detection Engine (affected versions not specified)

Description A flaw exists in the Snort 3 Detection Engine that may allow a remote attacker to disrupt packet inspection. This is due to an error in the JSTokenizer normalization logic when handling JavaScript during HTTP inspection. An attacker could exploit this by sending specially crafted HTTP packets through an existing connection. Successful exploitation could lead to a denial-of-service condition as the Snort 3 Detection Engine unexpectedly restarts. JSTokenizer is not enabled by default.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Resource Exhaustion

Enumeração de Fraquezas

CWE-400

Identificadores relacionados

CVE-2026-20066

Produtos afetados

Cisco Snort 3 Detection Engine

Referências · 3

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-multi-dos-XFWkWSwz · Aviso do Fabricante
• https://nvd.nist.gov/vuln/detail/CVE-2026-20066 · Nota de Segurança
• https://twitter.com/CVEnew/status/2029272786670166155 · Publicação no Twitter