Multiple Cisco Products Snort 3 MIME Information Disclosure or Denial of Service Vulnerability
Summary
| CVE | CVE-2025-20359 |
|---|---|
| State | PUBLISHED |
| Assigner | cisco |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2025-10-15 17:15:49 UTC |
| Updated | 2026-09-17 19:25:01 UTC |
| 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 disclosure of possible sensitive data or cause the Snort 3 Detection Engine to crash. This vulnerability is due to an error in the logic of buffer handling when the MIME fields of the HTTP header are parsed. This can result in a buffer under-read. An attacker could exploit this vulnerability by sending crafted HTTP packets through an established connection that is parsed by Snort 3. A successful exploit could allow the attacker to induce one of two possible outcomes: the unexpected restarting of the Snort 3 Detection Engine, which could cause a denial of service (DoS) condition, or information disclosure of sensitive information in the Snort 3 data stream. Due to the under-read condition, it is possible that sensitive information that is not valid connection data could be returned. |
Risk And Classification
Primary CVSS: v3.1 9.1 CRITICAL from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
EPSS: 0.004810000 probability, percentile 0.400730000 (date 2026-10-18)
Problem Types: CWE-127 | CWE-127 Buffer Under-read
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 9.1 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
| 3.1 | [email protected] | Secondary | 6.5 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L |
| 3.1 | CNA | CVSSV3_1 | 6.5 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
NoneAvailability
HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
NVD Known Affected Configurations (CPE 2.3)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Cisco | Cisco Cyber Vision | affected 3.0.0 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 3.0.2 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 3.0.3 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 3.0.1 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 3.1.0 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 3.0.4 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 3.1.1 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 3.1.2 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 3.2.0 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 3.0.5 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 3.2.1 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 3.0.6 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 3.2.2 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 3.2.3 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 3.2.4 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 4.0.0 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 4.0.1 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 4.0.2 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 4.0.3 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 4.1.0 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 4.1.1 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 4.1.2 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 4.1.3 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 4.1.4 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 4.2.0 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 4.2.1 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 4.1.5 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 4.2.2 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 4.2.X | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 4.2.3 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 4.2.4 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 4.2.6 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 4.1.6 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 4.3.0 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 4.3.1 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 4.3.2 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 4.3.3 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 4.4.0 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 4.4.1 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 4.4.2 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 4.4.3 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 4.1.7 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 5.0.0 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 5.0.1 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 5.0.2 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 5.1.0 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 5.1.1 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 5.1.2 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 5.1.3 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 5.2.0 | Not specified |
| CNA | Cisco | Cisco Cyber Vision | affected 5.2.1 | Not specified |
| CNA | Cisco | Cisco Secure Firewall Threat Defense FTD Software | affected 7.4.1 | Not specified |
| CNA | Cisco | Cisco Secure Firewall Threat Defense FTD Software | affected 7.4.1.1 | Not specified |
| CNA | Cisco | Cisco Secure Firewall Threat Defense FTD Software | affected 7.6.0 | Not specified |
| CNA | Cisco | Cisco Secure Firewall Threat Defense FTD Software | affected 7.4.2 | Not specified |
| CNA | Cisco | Cisco Secure Firewall Threat Defense FTD Software | affected 7.4.2.1 | Not specified |
| CNA | Cisco | Cisco Secure Firewall Threat Defense FTD Software | affected 7.7.0 | Not specified |
| CNA | Cisco | Cisco Secure Firewall Threat Defense FTD Software | affected 7.4.2.2 | Not specified |
| CNA | Cisco | Cisco Secure Firewall Threat Defense FTD Software | affected 7.6.1 | Not specified |
| CNA | Cisco | Cisco Secure Firewall Threat Defense FTD Software | affected 7.4.2.3 | Not specified |
| CNA | Cisco | Cisco Secure Firewall Threat Defense FTD Software | affected 7.4.2.4 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 3.17.1S | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 16.12.3 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 16.12.4 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.3.1a | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 16.6.6 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 16.12.2 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 3.17.0S | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 16.6.5 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.2.1r | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.1.1 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 16.6.7a | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 16.6.1 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 16.12.1a | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.3.2 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.4.1a | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 16.12.5 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.5.1 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 16.6.9 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.3.3 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.5.1a | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.3.4 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.3.4a | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.4.2 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.4.1b | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.6.1a | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 16.6.10 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.7.1a | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 16.12.6 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.6.2 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.8.1a | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 16.12.7 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.3.5 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.6.3 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.6.3a | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.7.2 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.9.1a | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.6.4 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.3.6 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 16.12.8 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.3.7 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.9.2a | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.6.5 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.11.1a | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.12.1a | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.6.6 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.3.8 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.3.8a | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.6.6a | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.12.2 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.12.3 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.6.7 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.12.3a | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.12.4 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.6.8 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.6.8a | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.12.4a | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.15.2c | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.12.4b | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.15.2a | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.12.5 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.15.3a | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.15.3 | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.12.5b | Not specified |
| CNA | Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.15.4 | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3... | [email protected] | sec.cloudapps.cisco.com | Vendor Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Additional Advisory Data
Exploits
CNA: The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.
There are currently no legacy QID mappings associated with this CVE.