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Cisco Pre-Announces Security Advisories and Patches for Multiple Products on September 2, 2026

Cisco Systems has disclosed plans to publish security advisories for several product lines on September 2, 2026. The advisories will cover vulnerabilities affecting IP telephony devices, network switches, and email security appliances. Targeted products include Cisco IOS XR Software, multiple series of Cisco Desk Phones, Nexus 9000 Series switches with Silicon One, and Cisco Secure Email. The company will also provide updates aimed at strengthening security in IOS XR. No CVE identifiers, vulnerability details, affected versions, or CVSS scores have been released at the pre-notification stage. Cisco strongly recommends applying the forthcoming fixes once they become available, while noting that the schedule and product scope may still change.

Security NEXTTranslated from Japanese

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Cisco Systems has revealed that it will publish multiple security advisories on September 2, 2026, covering a range of its products. The company issued a pre-notification on August 26, 2026, indicating that updates addressing vulnerabilities will be released alongside the advisories.

The affected products include Cisco IOS XR Software, the Cisco Desk Phone 9800, 8800, 7800, and 8875 series, Nexus 9000 Series switches equipped with Silicon One, and Cisco Secure Email. For IOS XR, Cisco plans to deliver updates specifically intended to enhance overall security posture.

At this pre-notification stage, the company has not disclosed CVE numbers, technical details of the vulnerabilities, affected versions, CVSS base scores, or severity ratings. No information has been provided regarding active exploitation or proof-of-concept code.

Cisco intends to publish individual advisories for each product that will include remediation guidance. The vendor continues to strongly recommend that customers apply the updates as soon as they are available. The pre-notification remains subject to change, and additional products may be added or removed from the list before the final publication date.

CVSSNexus 9000 SeriesCisco Secure Email
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