# Cisco Ios Software vulnerabilities

Source: https://junglewise.ai/threats/technologies/ios-software  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 11 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/ios-software.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 19 vulnerabilities in Cisco Ios Software: 0 in the last 7 days and 0 in the last 90 days, 18 of them critical and 17 exploited in the wild. The most recent, CVE-2026-20301, was published on 5 August 2026.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 19 (18 critical, 17 exploited in the wild)

## About Cisco Ios Software

Operating system software for Cisco network devices.

## Latest Cisco Ios Software vulnerabilities

- [CVE-2026-20301: Cisco IOS and IOS XE denial of service in XMCP](https://junglewise.ai/threats/cve-2026-20301-cisco-ios-and-ios-xe-denial-of-service-in-xmcp) (high, CVSS 8.6, published 5 Aug 2026)
- [CVE-2025-20363: Cisco multiple platforms code execution in web services](https://junglewise.ai/threats/cve-2025-20363-cisco-multiple-platforms-code-execution-in-web-services) (critical, CVSS 9, published 25 Sep 2025)
- [CVE-2018-0156: Cisco IOS Software and Cisco IOS XE Software Smart Install Denial-of-Service Vulnerability](https://junglewise.ai/threats/cve-2018-0156-cisco-ios-software-and-cisco-ios-xe-software-smart-install-denial) (critical, exploited in the wild, CVSS 7.5, published 3 Mar 2022)
- [CVE-2018-0159: Cisco IOS and XE Software Internet Key Exchange Version 1 Denial-of-Service Vulnerability](https://junglewise.ai/threats/cve-2018-0159-cisco-ios-and-xe-software-internet-key-exchange-version-1-denial) (critical, exploited in the wild, CVSS 7.5, published 3 Mar 2022)
- [CVE-2017-6663: Cisco IOS Software and Cisco IOS XE Software Denial-of-Service Vulnerability](https://junglewise.ai/threats/cve-2017-6663-cisco-ios-software-and-cisco-ios-xe-software-denial-of-service) (critical, exploited in the wild, CVSS 6.5, published 3 Mar 2022)
- [CVE-2018-0174: Cisco IOS Software and Cisco IOS XE Software Improper Input Validation Vulnerability](https://junglewise.ai/threats/cve-2018-0174-cisco-ios-software-and-cisco-ios-xe-software-improper-input) (critical, exploited in the wild, CVSS 8.6, published 3 Mar 2022)
- [CVE-2017-12232: Cisco IOS Software for Cisco Integrated Services Routers Denial-of-Service Vulnerability](https://junglewise.ai/threats/cve-2017-12232-cisco-ios-software-for-cisco-integrated-services-routers-denial) (critical, exploited in the wild, CVSS 6.5, published 3 Mar 2022)
- [CVE-2017-6744: Cisco IOS Software SNMP Remote Code Execution Vulnerability](https://junglewise.ai/threats/cve-2017-6744-cisco-ios-software-snmp-remote-code-execution-vulnerability) (critical, exploited in the wild, CVSS 8.8, published 3 Mar 2022)
- [CVE-2018-0180: Cisco IOS Software Denial-of-Service Vulnerability](https://junglewise.ai/threats/cve-2018-0180-cisco-ios-software-denial-of-service-vulnerability) (critical, exploited in the wild, CVSS 5.9, published 3 Mar 2022)
- [CVE-2017-12231: Cisco IOS Software Network Address Translation Denial-of-Service Vulnerability](https://junglewise.ai/threats/cve-2017-12231-cisco-ios-software-network-address-translation-denial-of-service) (critical, exploited in the wild, CVSS 7.5, published 3 Mar 2022)
- [CVE-2018-0154: Cisco IOS Software Integrated Services Module for VPN Denial-of-Service Vulnerability](https://junglewise.ai/threats/cve-2018-0154-cisco-ios-software-integrated-services-module-for-vpn-denial-of) (critical, exploited in the wild, CVSS 7.5, published 3 Mar 2022)
- [CVE-2017-12235: Cisco IOS Software for Cisco Industrial Ethernet Switches PROFINET Denial-of-Service Vulnerability](https://junglewise.ai/threats/cve-2017-12235-cisco-ios-software-for-cisco-industrial-ethernet-switches) (critical, exploited in the wild, CVSS 7.5, published 3 Mar 2022)
- [CVE-2018-0161: Cisco IOS Software Resource Management Errors Vulnerability](https://junglewise.ai/threats/cve-2018-0161-cisco-ios-software-resource-management-errors-vulnerability) (critical, exploited in the wild, CVSS 6.3, published 3 Mar 2022)
- [CVE-2018-0179: Cisco IOS Software Denial-of-Service Vulnerability](https://junglewise.ai/threats/cve-2018-0179-cisco-ios-software-denial-of-service-vulnerability) (critical, exploited in the wild, CVSS 5.9, published 3 Mar 2022)
- [CVE-2018-0151: Cisco IOS Software and Cisco IOS XE Software Quality of Service Remote Code Execution Vulnerability](https://junglewise.ai/threats/cve-2018-0151-cisco-ios-software-and-cisco-ios-xe-software-quality-of-service) (critical, exploited in the wild, CVSS 9.8, published 3 Mar 2022)
- [CVE-2017-12234: Cisco IOS Software Common Industrial Protocol Request Denial-of-Service Vulnerability](https://junglewise.ai/threats/cve-2017-12234-cisco-ios-software-common-industrial-protocol-request-denial-of) (critical, exploited in the wild, CVSS 7.5, published 3 Mar 2022)
- [CVE-2017-12233: Cisco IOS Software Common Industrial Protocol Request Denial-of-Service Vulnerability](https://junglewise.ai/threats/cve-2017-12233-cisco-ios-software-common-industrial-protocol-request-denial-of) (critical, exploited in the wild, CVSS 7.5, published 3 Mar 2022)
- [CVE-2018-0158: Cisco IOS and XE Software Internet Key Exchange Memory Leak Vulnerability](https://junglewise.ai/threats/cve-2018-0158-cisco-ios-and-xe-software-internet-key-exchange-memory-leak) (critical, exploited in the wild, CVSS 8.6, published 3 Mar 2022)
- [CVE-2018-0172: Cisco IOS and IOS XE Software Improper Input Validation Vulnerability](https://junglewise.ai/threats/cve-2018-0172-cisco-ios-and-ios-xe-software-improper-input-validation) (critical, exploited in the wild, CVSS 8.6, published 3 Mar 2022)

## Most severe Cisco Ios Software vulnerabilities

- [CVE-2018-0151: Cisco IOS Software and Cisco IOS XE Software Quality of Service Remote Code Execution Vulnerability](https://junglewise.ai/threats/cve-2018-0151-cisco-ios-software-and-cisco-ios-xe-software-quality-of-service) (critical, exploited in the wild, CVSS 9.8, published 3 Mar 2022)
- [CVE-2017-6744: Cisco IOS Software SNMP Remote Code Execution Vulnerability](https://junglewise.ai/threats/cve-2017-6744-cisco-ios-software-snmp-remote-code-execution-vulnerability) (critical, exploited in the wild, CVSS 8.8, published 3 Mar 2022)
- [CVE-2018-0174: Cisco IOS Software and Cisco IOS XE Software Improper Input Validation Vulnerability](https://junglewise.ai/threats/cve-2018-0174-cisco-ios-software-and-cisco-ios-xe-software-improper-input) (critical, exploited in the wild, CVSS 8.6, published 3 Mar 2022)
- [CVE-2018-0158: Cisco IOS and XE Software Internet Key Exchange Memory Leak Vulnerability](https://junglewise.ai/threats/cve-2018-0158-cisco-ios-and-xe-software-internet-key-exchange-memory-leak) (critical, exploited in the wild, CVSS 8.6, published 3 Mar 2022)
- [CVE-2018-0172: Cisco IOS and IOS XE Software Improper Input Validation Vulnerability](https://junglewise.ai/threats/cve-2018-0172-cisco-ios-and-ios-xe-software-improper-input-validation) (critical, exploited in the wild, CVSS 8.6, published 3 Mar 2022)
- [CVE-2017-12231: Cisco IOS Software Network Address Translation Denial-of-Service Vulnerability](https://junglewise.ai/threats/cve-2017-12231-cisco-ios-software-network-address-translation-denial-of-service) (critical, exploited in the wild, CVSS 7.5, published 3 Mar 2022)
- [CVE-2018-0156: Cisco IOS Software and Cisco IOS XE Software Smart Install Denial-of-Service Vulnerability](https://junglewise.ai/threats/cve-2018-0156-cisco-ios-software-and-cisco-ios-xe-software-smart-install-denial) (critical, exploited in the wild, CVSS 7.5, published 3 Mar 2022)
- [CVE-2018-0159: Cisco IOS and XE Software Internet Key Exchange Version 1 Denial-of-Service Vulnerability](https://junglewise.ai/threats/cve-2018-0159-cisco-ios-and-xe-software-internet-key-exchange-version-1-denial) (critical, exploited in the wild, CVSS 7.5, published 3 Mar 2022)
- [CVE-2018-0154: Cisco IOS Software Integrated Services Module for VPN Denial-of-Service Vulnerability](https://junglewise.ai/threats/cve-2018-0154-cisco-ios-software-integrated-services-module-for-vpn-denial-of) (critical, exploited in the wild, CVSS 7.5, published 3 Mar 2022)
- [CVE-2017-12235: Cisco IOS Software for Cisco Industrial Ethernet Switches PROFINET Denial-of-Service Vulnerability](https://junglewise.ai/threats/cve-2017-12235-cisco-ios-software-for-cisco-industrial-ethernet-switches) (critical, exploited in the wild, CVSS 7.5, published 3 Mar 2022)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other Cisco technologies

- [Cisco IOS](https://junglewise.ai/threats/technologies/ios): 70 vulnerabilities
- [Cisco Identity Services Engine](https://junglewise.ai/threats/technologies/identity-services-engine): 58 vulnerabilities
- [Cisco IOS XE](https://junglewise.ai/threats/technologies/ios-xe): 57 vulnerabilities
- [Cisco Firepower Threat Defense](https://junglewise.ai/threats/technologies/firepower-threat-defense): 33 vulnerabilities
- [Cisco Firepower Threat Defense Software](https://junglewise.ai/threats/technologies/firepower-threat-defense-software): 33 vulnerabilities
- [Cisco IOS XR](https://junglewise.ai/threats/technologies/ios-xr): 31 vulnerabilities
- [Cisco IOS XE Software](https://junglewise.ai/threats/technologies/ios-xe-software): 28 vulnerabilities
- [Cisco Adaptive Security Appliance Software](https://junglewise.ai/threats/technologies/secure-firewall-asa-software): 23 vulnerabilities
- [Cisco Snort 3](https://junglewise.ai/threats/technologies/snort-3): 20 vulnerabilities
- [Cisco ISE Passive Identity Connector](https://junglewise.ai/threats/technologies/ise-passive-identity-connector): 19 vulnerabilities
- [Cisco Secure Firewall Management Center](https://junglewise.ai/threats/technologies/secure-firewall-management-center): 16 vulnerabilities
- [Cisco Unity Connection](https://junglewise.ai/threats/technologies/unity-connection): 16 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Cisco Ios Software vulnerabilities", https://junglewise.ai/threats/technologies/ios-software, 11 November 2026.