CVE-2026-20277

CVSS

—

EPSS

0.002 (12.6th percentile)

CISA KEV

Not listed

Exploitation

No report

Public exploits

None seen

State

Unknown

Coverage

• Cisco PSIRT02 Sept, 16:02

  Cisco Advance Notification for Publication of September 2, 2026, Security Advisories

  On September 2, 2026, the Cisco Product Security Incident Response Team (PSIRT) published the following advisories: Cisco Security Advisory CVE ID Security Impact Rating CVSS Base Score Cisco IOS XR Software Security Hardening Release: September 2026 CVE-2026-20277 CVE-2026-20278 CVE-2026-20280…

  ↗sec.cloudapps.cisco.com/security/center/content…(opens the publisher's site in a new tab)

What we observed