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.
References
Configurations
No configuration.
History
15 Oct 2025, 17:15
| Type | Values Removed | Values Added |
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| New CVE |
Information
Published : 2025-10-15 17:15
Updated : 2025-10-16 15:28
NVD link : CVE-2025-20359
Mitre link : CVE-2025-20359
CVE.ORG link : CVE-2025-20359
JSON object : View
Products Affected
No product.
CWE
CWE-127
Buffer Under-read