Cisco IOS XR, when configured for Multi Protocol Label Switching (MPLS) and running on…
Priority LOW 26Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
Cisco IOS XR, when configured for Multi Protocol Label Switching (MPLS) and running on Cisco CRS-1 or Cisco 12000 series routers, allows remote attackers to cause a denial of service (Line card crash) via certain MPLS packets, as identified by Cisco bug ID CSCsc77475.
Why it matters now
EPSS 0.01798 78th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:ios_xr:3.0.1:*:*:*:*:*:*:* | 3.0.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.1.0:*:*:*:*:*:*:* | 3.1.0 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.2:*:*:*:*:*:*:* | 3.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.2.1:*:*:*:*:*:*:* | 3.2.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.2.2:*:*:*:*:*:*:* | 3.2.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.2.3:*:crs-1:*:*:*:*:* | 3.2.3 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.2.3:*:prp:*:*:*:*:* | 3.2.3 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.2.4:*:*:*:*:*:*:* | 3.2.4 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.2.50:*:*:*:*:*:*:* | 3.2.50 | Vulnerable | Cisco |
- cpe:2.3:o:cisco:ios_xr:3.0.1:*:*:*:*:*:*:* Versions 3.0.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.1.0:*:*:*:*:*:*:* Versions 3.1.0 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.2:*:*:*:*:*:*:* Versions 3.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.2.1:*:*:*:*:*:*:* Versions 3.2.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.2.2:*:*:*:*:*:*:* Versions 3.2.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.2.3:*:crs-1:*:*:*:*:* Versions 3.2.3 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.2.3:*:prp:*:*:*:*:* Versions 3.2.3 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.2.4:*:*:*:*:*:*:* Versions 3.2.4 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.2.50:*:*:*:*:*:*:* Versions 3.2.50 Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2006-1927
- 2026-10-03 Alias added: GHSA-jx3v-hq2f-272g
References
Other 1
More Cisco Ios Xr vulnerabilities
- TI-2020-02680 Cisco IOS XR Software Cisco Discovery Protocol Format String Vulnerability KEVCVSS 3.1HIGH 8.8
- TI-2018-00135 Memory corruption in Cisco IOS, IOS XE, and IOS XR KEVCVSS 3.1HIGH 8.8
- TI-2020-03113 Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerabilities KEVCVSS 3.1HIGH 8.6
- TI-2020-03110 Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerability KEVCVSS 3.1HIGH 8.6
- TI-2018-00142 Memory corruption in Cisco IOS, IOS XE, and IOS XR KEVCVSS 3.1HIGH 8.0
- TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
Sources
- CVE-2006-1927 · CVE Program
- CVE-2006-1927 · NVD
- FIRST EPSS
- GHSA-jx3v-hq2f-272g · GitHub Advisory Database · CC BY 4.0
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