CVE-2026-20027
MEDIUMCVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
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2Tags
Description
Multiple Cisco products are affected by a vulnerability in the processing of DCE/RPC requests that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to leak sensitive information or to restart, resulting in an interruption of packet inspection. This vulnerability is due to an error in buffer handling logic when processing DCE/RPC requests, which can result in a buffer out-of-bounds read. An attacker could exploit this vulnerability by sending a large number of DCE/RPC requests through an established connection that is inspected by Snort 3. A successful exploit could allow the attacker to obtain sensitive information in the Snort 3 data stream.
Analysis
Snort 3 Detection Engine contains a buffer out-of-bounds read vulnerability in DCE/RPC request processing that allows unauthenticated remote attackers to leak sensitive information or trigger service restarts over an established connection. An attacker can exploit this by sending specially crafted DCE/RPC requests to extract data from the inspection stream or interrupt packet analysis operations. …
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Review data exposure and access controls.
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