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
Published Mar 12, 2016
5.3
MEDIUMCVSS 3.0
EPSS 0.75%
Description
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.
Affected products
No data.
- 3.3.3
- 3.4.1
- 3.4.2
- 3.4.3
- 3.5.2
- 3.5.3
- 3.5.4
- 3.6.0
- 3.6.1
- 3.6.2
- 3.6.3
- 3.7.0
- 3.7.1
- 3.8.0
- 3.8.1
- 3.8.2
- 3.8.4
- 3.9.0
- 3.9.1
- 3.9.2
- 4.0.0
- 4.0.1
- 4.0.3
- 4.1.0
- 4.1.1
- 4.1.2
- 4.2.0
- 4.2.1
- 4.2.2
- 4.2.3
- 4.2.4
- 4.3.0
- 4.3.1
- 4.3.2
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:A/AC:H/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.75% (0.00746) | 53.13th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.75% (0.00746) | 49.81th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.38% (0.00377) | 57.16th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.15% (0.00153) | 52.93th | v3 (v2023.03.01) |
| Jun 13, 2024 | 0.15% (0.00153) | 51.69th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.15% (0.00153) | 49.68th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.05% (0.01055) | 50.47th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.05% (0.01055) | 48.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.05% (0.01055) | 27.52th | v2 (v2022.01.01) |
References (2)
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160311-gsr vendor-advisoryx_refsource_CISCOVendor Advisory
- http://www.securitytracker.com/id/1035314 vdb-entryx_refsource_SECTRACK
| Link | Providers | Tags |
|---|---|---|
| http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160311-gsr | vendor-advisoryx_refsource_CISCOVendor Advisory | |
| http://www.securitytracker.com/id/1035314 | vdb-entryx_refsource_SECTRACK |
Change history (0)
No recorded changes yet.