Technology · Cisco
Cisco IOS XR Software vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 9 vulnerabilities in Cisco IOS XR Software: 0 in the last 7 days and 6 in the last 90 days, 3 of them critical and 0 exploited in the wild. The most recent, CVE-2026-20280, was published on 2 September 2026. Nothing was published in the last eight weeks.
- Last 7 days
- 0
- Last 90 days
- 6
- Critical, all time
- 3
- Exploited in the wild
- 0
About Cisco IOS XR Software
Cisco operating system for routing and network infrastructure.
Latest Cisco IOS XR Software vulnerabilities
- CVE-2026-20280: Cisco IOS XR Software improper exception handlinghighCVSS 8.8EPSS 0.3%
- CVE-2026-20279: Cisco IOS XR Software improper access controlcriticalCVSS 9.8EPSS 0.3%
- CVE-2026-20277: Cisco IOS XR Software protection mechanism failurehighCVSS 8.2EPSS 0.2%
- CVE-2026-20276: Cisco IOS XR Software control flow management vulnerabilityhighCVSS 8.6EPSS 0.3%
- CVE-2026-20275: Cisco IOS XR Software incorrect calculation vulnerabilityhighCVSS 8.8EPSS 0.2%
- CVE-2026-20274: Cisco IOS XR Software resource control vulnerabilitiescriticalCVSS 9.8EPSS 0.7%
- CVE-2026-20074: Cisco IOS XR Software DoS in IS-IS Multi-Instance RoutinghighCVSS 7.4EPSS 0.2%
- CVE-2026-20046: Cisco IOS XR Software privilege escalation in task group assignmenthighCVSS 8.8EPSS 0.1%
- CVE-2025-20363: Cisco multiple platforms code execution in web servicescriticalCVSS 9EPSS 6.9%
Most severe Cisco IOS XR Software vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-20274: Cisco IOS XR Software resource control vulnerabilitiescriticalCVSS 9.8EPSS 0.7%
- CVE-2026-20279: Cisco IOS XR Software improper access controlcriticalCVSS 9.8EPSS 0.3%
- CVE-2025-20363: Cisco multiple platforms code execution in web servicescriticalCVSS 9EPSS 6.9%
- CVE-2026-20280: Cisco IOS XR Software improper exception handlinghighCVSS 8.8EPSS 0.3%
- CVE-2026-20275: Cisco IOS XR Software incorrect calculation vulnerabilityhighCVSS 8.8EPSS 0.2%
- CVE-2026-20046: Cisco IOS XR Software privilege escalation in task group assignmenthighCVSS 8.8EPSS 0.1%
- CVE-2026-20276: Cisco IOS XR Software control flow management vulnerabilityhighCVSS 8.6EPSS 0.3%
- CVE-2026-20277: Cisco IOS XR Software protection mechanism failurehighCVSS 8.2EPSS 0.2%
- CVE-2026-20074: Cisco IOS XR Software DoS in IS-IS Multi-Instance RoutinghighCVSS 7.4EPSS 0.2%
Vulnerabilities per week
Nothing was published in the last eight weeks. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 6 | 2 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Cisco IOS XR Software vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/ios-xr-software)<a href="https://junglewise.ai/threats/technologies/ios-xr-software"><img src="https://junglewise.ai/threats/technologies/ios-xr-software/badge.svg" alt="Cisco IOS XR Software vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/ios-xr-software.json, and this page as text at https://junglewise.ai/threats/technologies/ios-xr-software.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Cisco IOS XR Software vulnerabilities", https://junglewise.ai/threats/technologies/ios-xr-software, 11 November 2026.