Reference page — cumulative record through Wednesday, October 7, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV L H H N C H H H 7.5 .0706 94.0 YES
AFFECTED Product Versions Fixed Cisco Catalyst SD-WAN Manager 20.1.12 – —
TIMELINE Oct 8 Reserved by cisco Feb 25 Published (CNA: cisco) Apr 20 Added to CISA KEV, remediation due 2026-04-23
A vulnerability in the Data Collection Agent (DCA) feature of Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to gain DCA user privileges on an affected system. This vulnerability is due to the presence of a credential file for the DCA user on an affected system. An attacker could exploit this vulnerability by sending a crafted HTTP request and reading the file that contains the DCA password from that affected system. A successful exploit could allow the attacker to access another affected system and gain DCA user privileges. Note: Cisco Catalyst SD-WAN Manager releases 20.18 and later are not affected by this vulnerability.
| Date | Event | Detail |
|---|---|---|
| October 8, 2025 | Reserved | Reserved by cisco |
| February 25, 2026 | Published | Published (CNA: cisco) |
| April 20, 2026 | KEV ADDED | Added to CISA KEV, remediation due 2026-04-23 |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| Cisco | Cisco Catalyst SD-WAN Manager | — | 20.1.12 | — |
Authoritative record: CVE-2026-20128 at cve.org
Vendors: cisco
Weaknesses: CWE-257
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-20128 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, October 7, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
