CVE-2026-20280

CVE Enrichment

CVSS: 8.8 HIGH
EPSS: 0.29%
EPSS Percentile: 20.66%
CISA KEV: Not listed

Description

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-2026-20280 are related to improper checking or handling of exceptional condition issues that are grouped under the Common Weakness Enumeration (CWE) CWE-703.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: [email protected]
Published: 03-Sep-2026 00:17
Last Modified: 18-Sep-2026 20:17
EPSS Date: 2026-10-22
CWE: CWE-703

CVSS Vector


            CVSS:3.1                            AV:N /
                            AC:L /
                            PR:L /
                            UI:N /
                            S:U /
                            C:H /
                            I:H /
                            A:H

Affected Products / Versions

cisco / ios_xr
Version / affected range: 6.5.25
cpe:2.3:o:cisco:ios_xr:6.5.25:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 6.5.26
cpe:2.3:o:cisco:ios_xr:6.5.26:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 6.5.28
cpe:2.3:o:cisco:ios_xr:6.5.28:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 6.5.29
cpe:2.3:o:cisco:ios_xr:6.5.29:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 6.5.31
cpe:2.3:o:cisco:ios_xr:6.5.31:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 6.5.32
cpe:2.3:o:cisco:ios_xr:6.5.32:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 6.5.33
cpe:2.3:o:cisco:ios_xr:6.5.33:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 6.5.35
cpe:2.3:o:cisco:ios_xr:6.5.35:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 6.5.90
cpe:2.3:o:cisco:ios_xr:6.5.90:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 6.5.351
cpe:2.3:o:cisco:ios_xr:6.5.351:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 6.5.352
cpe:2.3:o:cisco:ios_xr:6.5.352:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 6.5.353
cpe:2.3:o:cisco:ios_xr:6.5.353:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 6.7.1
cpe:2.3:o:cisco:ios_xr:6.7.1:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 6.7.2
cpe:2.3:o:cisco:ios_xr:6.7.2:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 6.7.3
cpe:2.3:o:cisco:ios_xr:6.7.3:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 6.7.4
cpe:2.3:o:cisco:ios_xr:6.7.4:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 6.7.35
cpe:2.3:o:cisco:ios_xr:6.7.35:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 6.8.1
cpe:2.3:o:cisco:ios_xr:6.8.1:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 6.8.2
cpe:2.3:o:cisco:ios_xr:6.8.2:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 6.9.1
cpe:2.3:o:cisco:ios_xr:6.9.1:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 6.9.2
cpe:2.3:o:cisco:ios_xr:6.9.2:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.0.0
cpe:2.3:o:cisco:ios_xr:7.0.0:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.0.1
cpe:2.3:o:cisco:ios_xr:7.0.1:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.0.2
cpe:2.3:o:cisco:ios_xr:7.0.2:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.0.11
cpe:2.3:o:cisco:ios_xr:7.0.11:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.0.12
cpe:2.3:o:cisco:ios_xr:7.0.12:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.0.14
cpe:2.3:o:cisco:ios_xr:7.0.14:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.0.90
cpe:2.3:o:cisco:ios_xr:7.0.90:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.1.1
cpe:2.3:o:cisco:ios_xr:7.1.1:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.1.2
cpe:2.3:o:cisco:ios_xr:7.1.2:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.1.3
cpe:2.3:o:cisco:ios_xr:7.1.3:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.1.15
cpe:2.3:o:cisco:ios_xr:7.1.15:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.1.25
cpe:2.3:o:cisco:ios_xr:7.1.25:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.2.0
cpe:2.3:o:cisco:ios_xr:7.2.0:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.2.1
cpe:2.3:o:cisco:ios_xr:7.2.1:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.2.2
cpe:2.3:o:cisco:ios_xr:7.2.2:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.2.12
cpe:2.3:o:cisco:ios_xr:7.2.12:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.3.1
cpe:2.3:o:cisco:ios_xr:7.3.1:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.3.2
cpe:2.3:o:cisco:ios_xr:7.3.2:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.3.3
cpe:2.3:o:cisco:ios_xr:7.3.3:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.3.4
cpe:2.3:o:cisco:ios_xr:7.3.4:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.3.5
cpe:2.3:o:cisco:ios_xr:7.3.5:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.3.6
cpe:2.3:o:cisco:ios_xr:7.3.6:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.3.15
cpe:2.3:o:cisco:ios_xr:7.3.15:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.3.16
cpe:2.3:o:cisco:ios_xr:7.3.16:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.3.27
cpe:2.3:o:cisco:ios_xr:7.3.27:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.4.1
cpe:2.3:o:cisco:ios_xr:7.4.1:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.4.2
cpe:2.3:o:cisco:ios_xr:7.4.2:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.4.15
cpe:2.3:o:cisco:ios_xr:7.4.15:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.4.16
cpe:2.3:o:cisco:ios_xr:7.4.16:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.5.1
cpe:2.3:o:cisco:ios_xr:7.5.1:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.5.2
cpe:2.3:o:cisco:ios_xr:7.5.2:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.5.3
cpe:2.3:o:cisco:ios_xr:7.5.3:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.5.4
cpe:2.3:o:cisco:ios_xr:7.5.4:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.5.5
cpe:2.3:o:cisco:ios_xr:7.5.5:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.5.12
cpe:2.3:o:cisco:ios_xr:7.5.12:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.5.52
cpe:2.3:o:cisco:ios_xr:7.5.52:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.6.1
cpe:2.3:o:cisco:ios_xr:7.6.1:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.6.2
cpe:2.3:o:cisco:ios_xr:7.6.2:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.6.3
cpe:2.3:o:cisco:ios_xr:7.6.3:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.6.15
cpe:2.3:o:cisco:ios_xr:7.6.15:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.7.1
cpe:2.3:o:cisco:ios_xr:7.7.1:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.7.2
cpe:2.3:o:cisco:ios_xr:7.7.2:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.7.21
cpe:2.3:o:cisco:ios_xr:7.7.21:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.8.1
cpe:2.3:o:cisco:ios_xr:7.8.1:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.8.2
cpe:2.3:o:cisco:ios_xr:7.8.2:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.8.12
cpe:2.3:o:cisco:ios_xr:7.8.12:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.8.22
cpe:2.3:o:cisco:ios_xr:7.8.22:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.8.23
cpe:2.3:o:cisco:ios_xr:7.8.23:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.9.1
cpe:2.3:o:cisco:ios_xr:7.9.1:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.9.2
cpe:2.3:o:cisco:ios_xr:7.9.2:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.9.21
cpe:2.3:o:cisco:ios_xr:7.9.21:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.10.1
cpe:2.3:o:cisco:ios_xr:7.10.1:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.10.2
cpe:2.3:o:cisco:ios_xr:7.10.2:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.11.1
cpe:2.3:o:cisco:ios_xr:7.11.1:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.11.2
cpe:2.3:o:cisco:ios_xr:7.11.2:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 7.11.21
cpe:2.3:o:cisco:ios_xr:7.11.21:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 24.1.1
cpe:2.3:o:cisco:ios_xr:24.1.1:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 24.1.2
cpe:2.3:o:cisco:ios_xr:24.1.2:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 24.2.1
cpe:2.3:o:cisco:ios_xr:24.2.1:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 24.2.2
cpe:2.3:o:cisco:ios_xr:24.2.2:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 24.2.11
cpe:2.3:o:cisco:ios_xr:24.2.11:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 24.2.20
cpe:2.3:o:cisco:ios_xr:24.2.20:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 24.2.21
cpe:2.3:o:cisco:ios_xr:24.2.21:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 24.3.1
cpe:2.3:o:cisco:ios_xr:24.3.1:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 24.3.2
cpe:2.3:o:cisco:ios_xr:24.3.2:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 24.3.20
cpe:2.3:o:cisco:ios_xr:24.3.20:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 24.3.30
cpe:2.3:o:cisco:ios_xr:24.3.30:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 24.4.1
cpe:2.3:o:cisco:ios_xr:24.4.1:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 24.4.2
cpe:2.3:o:cisco:ios_xr:24.4.2:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 24.4.10
cpe:2.3:o:cisco:ios_xr:24.4.10:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 24.4.15
cpe:2.3:o:cisco:ios_xr:24.4.15:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 24.4.30
cpe:2.3:o:cisco:ios_xr:24.4.30:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 25.1.1
cpe:2.3:o:cisco:ios_xr:25.1.1:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 25.1.2
cpe:2.3:o:cisco:ios_xr:25.1.2:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 25.1.30
cpe:2.3:o:cisco:ios_xr:25.1.30:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 25.2.1
cpe:2.3:o:cisco:ios_xr:25.2.1:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 25.2.2
cpe:2.3:o:cisco:ios_xr:25.2.2:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 25.2.15
cpe:2.3:o:cisco:ios_xr:25.2.15:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 25.2.30
cpe:2.3:o:cisco:ios_xr:25.2.30:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 25.3.1
cpe:2.3:o:cisco:ios_xr:25.3.1:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 25.3.15
cpe:2.3:o:cisco:ios_xr:25.3.15:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 25.4.1
cpe:2.3:o:cisco:ios_xr:25.4.1:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 25.4.2
cpe:2.3:o:cisco:ios_xr:25.4.2:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 25.4.30
cpe:2.3:o:cisco:ios_xr:25.4.30:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 25.4.201
cpe:2.3:o:cisco:ios_xr:25.4.201:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 26.1.1
cpe:2.3:o:cisco:ios_xr:26.1.1:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 26.1.2
cpe:2.3:o:cisco:ios_xr:26.1.2:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 26.2.1
cpe:2.3:o:cisco:ios_xr:26.2.1:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 26.2.100
cpe:2.3:o:cisco:ios_xr:26.2.100:*:*:*:*:*:*:*
cisco / ios_xr
Version / affected range: 26.2.101
cpe:2.3:o:cisco:ios_xr:26.2.101:*:*:*:*:*:*:*

References

Last enrichment sync: 22-Oct-2026 22:58
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (1)

The remaining five, CVE-2026-20275 through 20278 and CVE-2026-20280, top out between 8.2 and 8.8. Cisco Patches Critical Nexus 9000 Flaw Enabling Unauthenticated Remote Code Execution

CVE (7)

People (1)

Threat Actors (1)

MITRE ATT&CK (5)

Vendors (1)

Products (8)

Industries (1)

Countries (1)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.