Cisco IOS XR through 4.3.2 on Gigabit Switch Router (GSR) 12000 devices does not properly…
Priority LOW 25CWE-399Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-399 and the CVSS impact.
Summary
Cisco IOS XR through 4.3.2 on Gigabit Switch Router (GSR) 12000 devices does not properly check for a Bidirectional Forwarding Detection (BFD) header in a UDP packet, which allows remote attackers to cause a denial of service (line-card restart) via a crafted packet, aka Bug ID CSCuw56900.
Why it matters now
EPSS 0.00746 55th 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 · 38
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:ios_xr:3.3.3:*:*:*:*:*:*:* | 3.3.3 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.4.1:*:*:*:*:*:*:* | 3.4.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.4.2:*:*:*:*:*:*:* | 3.4.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.4.3:*:*:*:*:*:*:* | 3.4.3 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.5.2:*:*:*:*:*:*:* | 3.5.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.5.3:*:*:*:*:*:*:* | 3.5.3 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.5.4:*:*:*:*:*:*:* | 3.5.4 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.6.0:*:*:*:*:*:*:* | 3.6.0 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.6.1:*:*:*:*:*:*:* | 3.6.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.6.2:*:*:*:*:*:*:* | 3.6.2 | Vulnerable | Cisco |
- cpe:2.3:o:cisco:ios_xr:3.3.3:*:*:*:*:*:*:* Versions 3.3.3 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.4.1:*:*:*:*:*:*:* Versions 3.4.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.4.2:*:*:*:*:*:*:* Versions 3.4.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.4.3:*:*:*:*:*:*:* Versions 3.4.3 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.5.2:*:*:*:*:*:*:* Versions 3.5.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.5.3:*:*:*:*:*:*:* Versions 3.5.3 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.5.4:*:*:*:*:*:*:* Versions 3.5.4 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.6.0:*:*:*:*:*:*:* Versions 3.6.0 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.6.1:*:*:*:*:*:*:* Versions 3.6.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.6.2:*:*:*:*:*:*:* Versions 3.6.2 Vulnerable ·Cisco
Show 28 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:ios_xr:3.6.3:*:*:*:*:*:*:* | 3.6.3 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.7.0:*:*:*:*:*:*:* | 3.7.0 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.7.1:*:*:*:*:*:*:* | 3.7.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.8.0:*:*:*:*:*:*:* | 3.8.0 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.8.1:*:*:*:*:*:*:* | 3.8.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.8.2:*:*:*:*:*:*:* | 3.8.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.8.4:*:*:*:*:*:*:* | 3.8.4 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.9.0:*:*:*:*:*:*:* | 3.9.0 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.9.1:*:*:*:*:*:*:* | 3.9.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:3.9.2:*:*:*:*:*:*:* | 3.9.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:4.0.0:*:*:*:*:*:*:* | 4.0.0 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:4.0.1:*:*:*:*:*:*:* | 4.0.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:4.0.3:*:*:*:*:*:*:* | 4.0.3 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:4.1.0:*:*:*:*:*:*:* | 4.1.0 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:4.1.1:*:*:*:*:*:*:* | 4.1.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:4.1.2:*:*:*:*:*:*:* | 4.1.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:4.2.0:*:*:*:*:*:*:* | 4.2.0 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:4.2.1:*:*:*:*:*:*:* | 4.2.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:4.2.2:*:*:*:*:*:*:* | 4.2.2 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:4.2.3:*:*:*:*:*:*:* | 4.2.3 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios_xr:4.2.4:*:*:*:*:*:*:* | 4.2.4 | 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:xr_12404:*:*:*:*:*:*:*:* | all versions | Running on | Cisco |
| cpe:2.3:h:cisco:xr_12406:*:*:*:*:*:*:*:* | all versions | Running on | Cisco |
| cpe:2.3:h:cisco:xr_12410:*:*:*:*:*:*:*:* | all versions | Running on | Cisco |
| cpe:2.3:h:cisco:xr_12416:*:*:*:*:*:*:*:* | all versions | Running on | Cisco |
- cpe:2.3:o:cisco:ios_xr:3.6.3:*:*:*:*:*:*:* Versions 3.6.3 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.7.0:*:*:*:*:*:*:* Versions 3.7.0 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.7.1:*:*:*:*:*:*:* Versions 3.7.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.8.0:*:*:*:*:*:*:* Versions 3.8.0 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.8.1:*:*:*:*:*:*:* Versions 3.8.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.8.2:*:*:*:*:*:*:* Versions 3.8.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.8.4:*:*:*:*:*:*:* Versions 3.8.4 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.9.0:*:*:*:*:*:*:* Versions 3.9.0 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.9.1:*:*:*:*:*:*:* Versions 3.9.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:3.9.2:*:*:*:*:*:*:* Versions 3.9.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:4.0.0:*:*:*:*:*:*:* Versions 4.0.0 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:4.0.1:*:*:*:*:*:*:* Versions 4.0.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:4.0.3:*:*:*:*:*:*:* Versions 4.0.3 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:4.1.0:*:*:*:*:*:*:* Versions 4.1.0 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:4.1.1:*:*:*:*:*:*:* Versions 4.1.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:4.1.2:*:*:*:*:*:*:* Versions 4.1.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:4.2.0:*:*:*:*:*:*:* Versions 4.2.0 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:4.2.1:*:*:*:*:*:*:* Versions 4.2.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:4.2.2:*:*:*:*:*:*:* Versions 4.2.2 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:4.2.3:*:*:*:*:*:*:* Versions 4.2.3 Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios_xr:4.2.4:*:*:*:*:*:*:* Versions 4.2.4 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:xr_12404:*:*:*:*:*:*:*:* Versions all versions Running on ·Cisco
- cpe:2.3:h:cisco:xr_12406:*:*:*:*:*:*:*:* Versions all versions Running on ·Cisco
- cpe:2.3:h:cisco:xr_12410:*:*:*:*:*:*:*:* Versions all versions Running on ·Cisco
- cpe:2.3:h:cisco:xr_12416:*:*:*:*:*:*:*:* Versions all versions Running on ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2016-1361
- 2026-10-03 Alias added: GHSA-w5c8-79jw-vxpq
References
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-2016-1361 · CVE Program
- CVE-2016-1361 · NVD
- FIRST EPSS
- GHSA-w5c8-79jw-vxpq · 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