Cisco IOS XR 4.3.4 and earlier on ASR 9000 devices, when bridge-group virtual interface…
Priority LOW 27CWE-20Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Complete
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
Cisco IOS XR 4.3.4 and earlier on ASR 9000 devices, when bridge-group virtual interface (BVI) routing is enabled, allows remote attackers to cause a denial of service (chip and card hangs) via a series of crafted MPLS packets, aka Bug ID CSCuo91149.
Why it matters now
EPSS 0.00649 51st 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 · 11
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:* | up to 4.3.4 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:4.3.0:*:*:*:*:*:*:* | 4.3.0 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:4.3.1:*:*:*:*:*:*:* | 4.3.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:4.3.2:*:*:*:*:*:*:* | 4.3.2 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:asr_9000_rsp440_router:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Cisco |
| cpe:2.3:h:cisco:asr_9001:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Cisco |
| cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Cisco |
| cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Cisco |
| cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Cisco |
| cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Cisco |
- cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:* Versions up to 4.3.4 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:4.3.0:*:*:*:*:*:*:* Versions 4.3.0 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:4.3.1:*:*:*:*:*:*:* Versions 4.3.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:4.3.2:*:*:*:*:*:*:* Versions 4.3.2 Vulnerable ·Cisco
- cpe:2.3:h:cisco:asr_9000_rsp440_router:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Cisco
- cpe:2.3:h:cisco:asr_9001:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Cisco
- cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Cisco
- cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Cisco
- cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Cisco
- cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2014-3321
- 2026-10-03 Alias added: GHSA-w963-wfhc-pqh3
- 2026-10-16 EPSS moved to the 50th–90th percentile
References
More Cisco Asr 9000 Rsp440 Router vulnerabilities
- TI-2012-02177 Cisco IOS XR before 4.2.1 on ASR 9000 series devices and CRS series devices allows remote… CVSS 2.0HIGH 7.8
- TI-2014-02729 Cisco IOS XR on ASR 9000 devices does not properly use compression for port-range and… CVSS 2.0HIGH 7.5
- TI-2014-02643 Cisco IOS XR on Trident line cards in ASR 9000 devices lacks a static punt policer, which… CVSS 2.0MEDIUM 6.4
- TI-2014-02657 Cisco IOS XR 4.3(.2) and earlier on ASR 9000 devices does not properly perform NetFlow… CVSS 2.0MEDIUM 6.1
- TI-2012-01201 Cisco IOS before 15.1(1)SY on ASR 1000 devices, when Multicast Listener Discovery (MLD)… CVSS 2.0MEDIUM 6.1
- TI-2014-02669 Cisco IOS XR 4.3(.2) and earlier on ASR 9000 devices does not properly perform NetFlow… CVSS 2.0MEDIUM 4.6
Sources
- CVE-2014-3321 · CVE Program
- CVE-2014-3321 · NVD
- FIRST EPSS
- GHSA-w963-wfhc-pqh3 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences