Live › vulnerability › CVE-2026-76491
Go to dashboardCisco Expressway Series contains reachable assertion failures (CWE-617) found in an internal security review, which Cisco fixed in hardening releases. An attacker who can send crafted traffic can trigger an assertion that stops the service, causing denial of service.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 21:57 UTC. All times on this page are UTC.
Organizations running Cisco Expressway Series appliances, which handle video and collaboration traffic at the network edge. The sources do not name the affected versions or which features must be enabled, so check Cisco's advisory before assuming exposure. Teams not running Expressway can skip it.
No product ranges from the sources yet.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Expressway Series software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.
The vulnerabilities tracked by CVE-2026-76491 are related to issues concerning reachable assertions that are grouped under the Common Weakness Enumeration (CWE) Base CWE-617.
This page as .md · .json · in your agent: get_signal("CVE-2026-76491")
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