Cisco IOS XE Updates

Here you will find all software, firmware, and hardware updates from Cisco IOS XE.

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New Release every
20 days
Critical fixes
10
Security-related releases
100%

Risk factor
A total of 19 updates have been released for IOS XE.

Smooth installs %
Minor issues %
Major issues %

Variants

IOS XE 17.16
View 8 Updates
IOS XE 17.17
View 5 Updates
IOS XE 17.18
View 6 Updates

Updates

Last updated: 06/05/2026

Cisco IOS XE 17.18.x release notes for C8400 Secure Series Routers cover 17.18.1a and 17.18.2. Highlights include Hosted Edge Services, SRv6 and GRE-TP enhancements, security policy management, and multiple resolved and open issues.

security Cisco IOS XE 17.18
12/04/2025
Cisco IOS XE 17.18.x
security Cisco IOS XE 17.18
12/04/2025
Cisco IOS XE 17.18.x

Cisco Catalyst 9600 Series Switches release notes for Cisco IOS XE 17.18.x cover new features in 17.18.1 and 17.18.2, plus platform caveats, limitations, and upgrade guidance. The document includes release references 17.18.1, 17.18.2, and 17.18.3. Reference IDs: CSCvu14870, CSCwq83338.

security Cisco IOS XE 17.18
08/07/2025
Cisco IOS XE 17.18.x
security Cisco IOS XE 17.18
08/07/2025
Cisco IOS XE 17.18.x

Cisco Catalyst 9500 Series Switches, Cisco IOS XE 17.18.x includes new features in 17.18.1 and 17.18.2, with no new features in 17.18.3. The document also highlights security warnings for legacy protocols, upgrade/downgrade steps, ROMMON guidance, and open caveats.

security Cisco IOS XE 17.18
08/07/2025
Cisco IOS XE 17.18.x
security Cisco IOS XE 17.18
08/07/2025
Cisco IOS XE 17.18.x

Cisco Catalyst 9400 Series Switches release notes for Cisco IOS XE 17.18.x cover 17.18.1, 17.18.2, and 17.18.3. Highlights include new EVPN, programmability, AAA, and security features, plus resolved caveats in 17.18.3 and upgrade guidance.

security Cisco IOS XE 17.18
08/07/2025
Cisco IOS XE 17.18.x
security Cisco IOS XE 17.18
08/07/2025
Cisco IOS XE 17.18.x

Cisco Catalyst 9300 Series Switches, Cisco IOS XE 17.18.x covers releases 17.18.1, 17.18.2, and 17.18.3. It adds EVPN multihoming, TACACS+ over TLS, VRF-restricted gNXI access, and security warnings for legacy protocols and weak configurations.

security Cisco IOS XE 17.18
08/07/2025
Cisco IOS XE 17.18.x
security Cisco IOS XE 17.18
08/07/2025
Cisco IOS XE 17.18.x

Cisco Catalyst 9200 Series Switches, Cisco IOS XE 17.18.x includes new features in 17.18.1 and 17.18.2, plus caveat fixes in 17.18.3. The release train also introduces security warnings for legacy or insecure protocols and configuration practices.

security Cisco IOS XE 17.18
08/07/2025
Cisco IOS XE 17.18.x
security Cisco IOS XE 17.18
08/07/2025
Cisco IOS XE 17.18.x

Cisco IOS XE 17.17.x for Catalyst 9200 Series Switches adds CTS Role-Based Enforcement, Strict-KEX, and YANG on-change support. It also changes `ecomode` to `auto-off` and includes open caveat CSCvu14870.

security Cisco IOS XE 17.17
03/31/2025
Cisco IOS XE 17.17.x
security Cisco IOS XE 17.17
03/31/2025
Cisco IOS XE 17.17.x

Cisco Catalyst 9600 Series Switches, Cisco IOS XE 17.17.x documents 17.17.1. It adds CTS Role-Based Enforcement, on-change support for location-aware YANG models, Strict-KEX, and secure SNMPv3 CRUD via NETCONF; open caveats CSCvu14870 and CSCwq83338 remain.

security Cisco IOS XE 17.17
03/31/2025
Cisco IOS XE 17.17.1
security Cisco IOS XE 17.17
03/31/2025
Cisco IOS XE 17.17.1

Cisco Catalyst 9500 Series Switches, Cisco IOS XE 17.17.x adds Interface-Level VLAN-SGT Mapping and split ARP/ForUS queues in 17.17.1. It also includes open caveat CSCvu14870 and new install-mode upgrade guidance for 17.17.1.

security Cisco IOS XE 17.17
03/31/2025
Cisco IOS XE 17.17.1
security Cisco IOS XE 17.17
03/31/2025
Cisco IOS XE 17.17.1

Cisco Catalyst 9400 Series Switches, Cisco IOS XE 17.17.x adds CTS Role-Based Enforcement, Strict-KEX, uplink sequencing, and new hardware support including QSFP-100G-LR-S and C9400-PWR-2100ACT. Release 17.17.1 also resolves several switch and link issues and includes upgrade, ROMMON, and CPLD guidance.

security Cisco IOS XE 17.17
03/31/2025
17.17.1
security Cisco IOS XE 17.17
03/31/2025
17.17.1

Cisco Catalyst 9300 Series Switches Cisco IOS XE 17.17.1 adds CTS role-based enforcement, LLDP on the management port for 9300-L, and new programmability and security enhancements. It also renames `ecomode` to `auto-off` and includes caveat CSCvu14870.

security Cisco IOS XE 17.17
03/31/2025
17.17.1
security Cisco IOS XE 17.17
03/31/2025
17.17.1

Cisco IOS XE 17.16.1a is the first 17.16.x release for Cisco 4000 Series ISRs. It adds new routing, logging, SD-WAN, ThousandEyes, UTD, and CUBE features, and includes multiple bug fixes plus SSH hardening by disabling `ssh-rsa` on port 22.

security Cisco IOS XE 17.16
12/24/2024
Cisco IOS XE 17.16.1a
security Cisco IOS XE 17.16
12/24/2024
Cisco IOS XE 17.16.1a

Cisco IOS XE 17.16.1a is the first 17.16.x release for Cisco Catalyst 8500 Series Edge Platforms. It adds security hardening, SD-Routing and monitoring enhancements, and includes multiple resolved bugs.

security Cisco IOS XE 17.16
12/24/2024
Cisco IOS XE 17.16.1a
security Cisco IOS XE 17.16
12/24/2024
Cisco IOS XE 17.16.1a

Release Notes for Cisco Catalyst Cellular Gateways, Cisco IOS CG 17.16.x. This release notes page states there are no new software features, no resolved bugs, and no open bugs for Cisco IOS CG 17.16.1a.

Cisco IOS XE 17.16
12/22/2024
Cisco IOS CG 17.16.x
Cisco IOS XE 17.16
12/22/2024
Cisco IOS CG 17.16.x

Cisco Catalyst 8000V Edge Software release notes for Cisco IOS XE 17.16.x, first release 17.16.1a. Highlights include new SD-Routing, CUBE, logging, EST, and security improvements such as disabling `ssh-rsa` by default.

security Cisco IOS XE 17.16
12/22/2024
Cisco IOS XE 17.16.1a
security Cisco IOS XE 17.16
12/22/2024
Cisco IOS XE 17.16.1a

Release Notes for Cisco Catalyst 8200 and Catalyst 8300 Series Edge Platforms, Cisco IOS XE 17.16.x. Cisco IOS XE 17.16.1a adds new SD-WAN, security, logging, and routing features, and includes multiple resolved and open bugs.

security Cisco IOS XE 17.16
12/22/2024
Cisco IOS XE 17.16.1a
security Cisco IOS XE 17.16
12/22/2024
Cisco IOS XE 17.16.1a

Release notes for Cisco ASR 1000 Series running Cisco IOS XE 17.16.x. Cisco IOS XE 17.16.1a is the first release in this series and adds SD-Routing, logging, ThousandEyes, CUBE SCIP preview support, and disables `ssh-rsa` by default on port 22.

security Cisco IOS XE 17.16
12/22/2024
Cisco IOS XE 17.16.1a
security Cisco IOS XE 17.16
12/22/2024
Cisco IOS XE 17.16.1a

Release notes for Cisco 1000 Series Integrated Services Routers on Cisco IOS XE 17.16.x. Cisco IOS XE 17.16.1a is the first release in this series and adds new SD-WAN, ThousandEyes, logging, cellular, and security features.

security Cisco IOS XE 17.16
12/22/2024
Cisco IOS XE 17.16.1a
security Cisco IOS XE 17.16
12/22/2024
Cisco IOS XE 17.16.1a

Cisco Catalyst 9800 Series Wireless Controller, Cisco IOS XE 17.16.x adds new telemetry, PAT, Product Analytics, and GUI help features in 17.16.1. It also includes multiple AP and controller fixes, plus important support and upgrade limitations for EWC-AP, Wi-Fi 7 APs, and Cisco Wireless licenses.

security Cisco IOS XE 17.16
12/11/2024
Cisco IOS XE 17.16.1
security Cisco IOS XE 17.16
12/11/2024
Cisco IOS XE 17.16.1