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Vulnerabilities

Vulnerability · CVE-2026-20237

CVE-2026-20237 is listed by Cisco Advance Notification for Publication of September 16, 2026, Security Advisories.

Published Sep 16, 2026 · Cisco

Last checked Oct 25, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-20237. EPSS is 0.48%. Act only if a listed version of Cisco is installed.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Unknown—
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.48%
Remediation
Not established
Affected products
Cisco

CVE-2026-20237 is listed by Cisco Advance Notification for Publication of September 16, 2026, Security Advisories.

No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.

How to fix CVE-2026-20237

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-20237. EPSS is 0.48%. Act only if a listed version of Cisco is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.48%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Cisco security

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.

  1. Sep 16, 2026 · Cisco Security Advisories

    Detected

    CVE-2026-20237 is listed by Cisco Advance Notification for Publication of September 16, 2026, Security Advisories.

Sources

  • Cisco Security AdvisoriesVendor advisoryCVE-2026-20237

    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-2026-20237

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-20237

    30-day exploitation probability 0.48%

    first.org

Freshness

Last verified in this catalog Oct 25, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 25, 2026
  • Cisco Security AdvisoriesOct 25, 2026
  • CVE.orgOct 17, 2026