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 N L L N U L L N 5.4 .2498 97.9 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 API of Cisco Catalyst SD-WAN Manager could allow an authenticated, remote attacker to overwrite arbitrary files on the local file system. To exploit this vulnerability, the attacker must have valid read-only credentials with API access on the affected system. This vulnerability is due to improper file handling on the API interface of an affected system. An attacker could exploit this vulnerability by uploading a malicious file on the local file system. A successful exploit could allow the attacker to overwrite arbitrary files on the affected system and gain vmanage user privileges.
| 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-2026-20122 at cve.org
Vendors: cisco
Weaknesses: CWE-648
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-20122 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.
