Vulnerability · CVE-2026-20305
CVE-2026-20305 is listed by Cisco Advance Notification for Publication of September 16, 2026, Security Advisories.
Published Sep 16, 2026 · Cisco · evidence confidence high
CVE-2026-20305 is listed by Cisco Advance Notification for Publication of September 16, 2026, Security Advisories.
Grounded briefings
Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.
Executive
CVE-2026-20305 is a unknown public vulnerability record for Cisco. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.
System administrator
Identify whether Cisco is in your estate, then compare installed versions with the affected ranges. Affected version ranges have not been ingested yet. Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.
Security analyst
Signals on file: EPSS 1.4%. It is not currently listed in the CISA Known Exploited catalog. Sources contributing to this record: cisco, cve_org, epss. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.
Exploitation and remediation
Exploitation evidence
Not listed as known exploited in CISA KEV. Not in CISA KEV or VulnCheck KEV.
Patch and remediation
No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.
Safe detection guidance
Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.
Technology hubs
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Sep 16, 2026 · Cisco Security Advisories
Detected
CVE-2026-20305 is listed by Cisco Advance Notification for Publication of September 16, 2026, Security Advisories.
Sources
- Cisco Security AdvisoriesVendor advisoryCVE-2026-20305
On September 16, 2026, the Cisco Product Security Incident Response Team (PSIRT) published the advisories that are listed in the following tables. To remediate these vulnerabilities, Cisco strongly recommends that customers upgrade to the fixed software that is indicated in the a
sec.cloudapps.cisco.com - CVE.orgVulnerability recordCVE-2026-20305
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-20305
30-day exploitation probability 1.4%
first.org