Multiple Cisco products are affected by a vulnerability in the Snort 3 HTTP Decoder that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart. This vulnerability is due to a lack of complete error checking when the MIME fields of the HTTP header are parsed. An attacker could exploit this vulnerability by sending crafted HTTP packets through an established connection to be parsed by Snort 3. A successful exploit could allow the attacker to cause a DoS condition when the Snort 3 Detection Engine unexpectedly restarts.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable yes

Technical Impact partial

Affected Vendors & Products

Vendors Products
Cisco
  • Cyber Vision
  • Secure Firewall Threat Defense
  • Utd Snort Ips Engine Software

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References
Link Providers
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-mime-vulns-tTL8PgVH cve-icon cve-icon
History

Tue, 21 Oct 2025 09:45:00 +0000

Type Values Removed Values Added
First Time appeared Cisco
Cisco cyber Vision
Cisco secure Firewall Threat Defense
Cisco utd Snort Ips Engine Software
Vendors & Products Cisco
Cisco cyber Vision
Cisco secure Firewall Threat Defense
Cisco utd Snort Ips Engine Software

Wed, 15 Oct 2025 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 15 Oct 2025 16:30:00 +0000

Type Values Removed Values Added
Description Multiple Cisco products are affected by a vulnerability in the Snort 3 HTTP Decoder that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart. This vulnerability is due to a lack of complete error checking when the MIME fields of the HTTP header are parsed. An attacker could exploit this vulnerability by sending crafted HTTP packets through an established connection to be parsed by Snort 3. A successful exploit could allow the attacker to cause a DoS condition when the Snort 3 Detection Engine unexpectedly restarts.
Weaknesses CWE-805
References
Metrics cvssV3_1

{'score': 5.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L'}
cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published: 2025-10-15T16:19:46.840Z

Updated: 2025-10-15T17:43:48.696Z

Reserved: 2024-10-10T19:15:13.258Z

Link: CVE-2025-20360

cve-icon Vulnrichment

Updated: 2025-10-15T17:43:45.397Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-10-15T17:15:49.433

Modified: 2025-10-16T15:28:59.610

Link: CVE-2025-20360

cve-icon Redhat

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