CVE-2026-20278: Cisco IOS XR Software Security Hardening Release: September 2026
Cisco · Cisco IOS XR Software
Affected: Cisco IOS XR Software · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 42% of scored CVEs
DescriptionCVE.org
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XR Software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening releases that address multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20278 are related to improper neutralization issues that are grouped under the Common Weakness Enumeration (CWE) CWE-707.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Cisco · Cisco IOS XR Software6.5.29; 7.0.1; 6.5.26; 6.5.25; 6.5.28; 6.5.90 and 106 more
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Cisco
- Published
- September 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-20278 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.