PT-2026-23026 · Cisco · Snort 3

Jason Crowder · Published 2026-03-04 · Updated 2026-03-04 · CVE-2026-20068

Positive Technologies (AI Summary)

CVSS v3.1

5.8

Medium

Base vector

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 products (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 caused by insufficient error checking during the parsing of remote procedure call (RPC) data. An attacker could exploit this by sending specially crafted RPC packets through an existing connection, potentially leading to a denial-of-service (DoS) condition as the Snort 3 Detection Engine restarts unexpectedly.

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

Weakness Enumeration

CWE-248

Related Identifiers

CVE-2026-20068

Affected Products

Snort 3

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-20068 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-multi-dos-XFWkWSwz · Vendor Advisory
• https://twitter.com/CVEnew/status/2029272784841449669 · Twitter Post