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 H N U H H H 7.2 .8963 99.8 YES
AFFECTED Product Versions Fixed Cisco IOS XE Software 16.1.1 – —
TIMELINE Oct 27 Reserved by cisco Oct 23 Added to CISA KEV, remediation due 2023-10-27 Oct 24 Published (CNA: cisco)
A vulnerability in the web UI feature of Cisco IOS XE Software could allow an authenticated, remote attacker to inject commands with the privileges of root. This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending crafted input to the web UI. A successful exploit could allow the attacker to inject commands to the underlying operating system with root privileges.
| Date | Event | Detail |
|---|---|---|
| October 27, 2022 | Reserved | Reserved by cisco |
| October 23, 2023 | KEV ADDED | Added to CISA KEV, remediation due 2023-10-27 |
| October 24, 2023 | Published | Published (CNA: cisco) |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| Cisco | Cisco IOS XE Software | — | 16.1.1 | — |
Authoritative record: CVE-2023-20273 at cve.org
Vendors: cisco
Weaknesses: CWE-78
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2023-20273 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.
