cvedb.io
CVE-2026-20004
HIGH · CVSS 7.4
EPSS exploitation probability: 0%
Published 2026-03-25T16:16:10.520 · Last modified 2026-06-17T10:16:51.707

Summary

A vulnerability in the TLS library of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to exhaust the available memory of an affected device. This vulnerability is due to improper management of memory resources during TLS connection setup. An attacker could exploit this vulnerability by repeatedly triggering the conditions that cause the memory increase. This could be done in a variety of ways, such as by repeatedly attempting Extensible Authentication Protocol (EAP) authentication when local EAP is enabled on an affected device or by using a machine-in-the-middle attack and resetting TLS connections between the affected device and other devices. A successful exploit could allow the attacker to exhaust the available memory on an affected device, resulting in an un

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.