Cisco NX-OS 4.1 through 7.3 and 11.0 through 11.2 on Nexus 2000, 3000, 3500, 5000, 5500, 5600, 6000, 7000, 7700, and 9000 devices allows remote attackers to cause a denial of service (device crash) via malformed IPv4 DHCP packets to the DHCPv4 relay agent, aka Bug IDs CSCuq39250, CSCus21733, CSCus21739, CSCut76171, and CSCux67182
Published Oct 6, 2016
7.5
HIGHCVSS 3.0
EPSS 2.83%
Description
Cisco NX-OS 4.1 through 7.3 and 11.0 through 11.2 on Nexus 2000, 3000, 3500, 5000, 5500, 5600, 6000, 7000, 7700, and 9000 devices allows remote attackers to cause a denial of service (device crash) via malformed IPv4 DHCP packets to the DHCPv4 relay agent, aka Bug IDs CSCuq39250, CSCus21733, CSCus21739, CSCut76171, and CSCux67182.
Affected products
No data.
Configuration 1
- 4.2\(1\)n1\(1\)
- 4.2\(1\)n2\(1\)
- 4.2\(1\)n2\(1a\)
- 5.0\(2\)n1\(1\)
- 5.0\(2\)n2\(1\)
- 5.0\(2\)n2\(1a\)
- 5.0\(3\)n1\(1c\)
- 5.0\(3\)n2\(1\)
- 5.0\(3\)n2\(2\)
- 5.0\(3\)n2\(2a\)
- 5.0\(3\)n2\(2b\)
- 5.1\(3\)n1\(1\)
- 5.1\(3\)n1\(1a\)
- 5.1\(3\)n2\(1\)
- 5.1\(3\)n2\(1a\)
- 5.1\(3\)n2\(1b\)
- 5.1\(3\)n2\(1c\)
- 5.2\(1\)n1\(1\)
- 5.2\(1\)n1\(1a\)
- 5.2\(1\)n1\(1b\)
- 5.2\(1\)n1\(2\)
- 5.2\(1\)n1\(2a\)
- 5.2\(1\)n1\(3\)
- 5.2\(1\)n1\(4\)
- 5.2\(1\)n1\(5\)
- 5.2\(1\)n1\(6\)
- 5.2\(1\)n1\(7\)
- 5.2\(1\)n1\(8\)
- 5.2\(1\)n1\(8a\)
- 6.0\(2\)n1\(2a\)
Running on/with
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
Configuration 2
- 6.0\(2\)n1\(2\)
- 6.0\(2\)n1\(2a\)
- 6.0\(2\)n2\(1\)
- 6.0\(2\)n2\(1b\)
- 6.0\(2\)n2\(2\)
- 6.0\(2\)n2\(3\)
- 6.0\(2\)n2\(4\)
- 6.0\(2\)n2\(5\)
- 6.0\(2\)n2\(5a\)
- 6.0\(2\)n2\(6\)
- 7.0\(0\)n1\(1\)
- 7.0\(1\)n1\(1\)
- 7.0\(2\)n1\(1\)
- 7.0\(3\)n1\(1\)
- 7.0\(4\)n1\(1\)
- 7.0\(5\)n1\(1\)
- 7.0\(5\)n1\(1a\)
- 7.1\(0\)n1\(1a\)
- 7.1\(0\)n1\(1b\)
Running on/with
- n/a
- n/a
Configuration 3
- 6.1\(2\)i2\(1\)
- 6.1\(2\)i2\(2\)
- 6.1\(2\)i2\(2a\)
- 6.1\(2\)i2\(2b\)
- 6.1\(2\)i2\(3\)
- 6.1\(2\)i3\(1\)
- 6.1\(2\)i3\(2\)
- 6.1\(2\)i3\(3\)
- 6.1\(2\)i3\(3.78\)
- 6.1\(2\)i3\(4\)
- 7.0\(3\)
Running on/with
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
Configuration 4
- 4.1.\(2\)
- 4.1.\(3\)
- 4.1.\(4\)
- 4.1.\(5\)
- 4.2\(3\)
- 4.2\(4\)
- 4.2\(6\)
- 4.2\(8\)
- 4.2.\(2a\)
- 5.0\(2a\)
- 5.0\(3\)
- 5.0\(5\)
- 5.1\(1\)
- 5.1\(1a\)
- 5.1\(3\)
- 5.1\(4\)
- 5.1\(5\)
- 5.1\(6\)
- 5.2\(1\)
- 5.2\(3a\)
- 5.2\(4\)
- 5.2\(5\)
- 5.2\(7\)
- 5.2\(9\)
- 6.0\(1\)
- 6.0\(2\)
- 6.0\(3\)
- 6.0\(4\)
- 6.1\(1\)
- 6.1\(2\)
- 6.1\(3\)
- 6.1\(4\)
- 6.1\(4a\)
- 6.1\(5\)
- 6.2\(2\)
- 6.2\(2a\)
- 6.2\(6\)
- 6.2\(6b\)
- 6.2\(8\)
- 6.2\(8a\)
- 6.2\(8b\)
- 6.2\(10\)
- 6.2\(12\)
- 6.2\(14\)s1
- 7.2\(0\)n1\(0.1\)
Running on/with
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/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 | 2.83% (0.02832) | 86.13th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.91% (0.01914) | 77.09th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.76% (0.00762) | 71.64th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.56% (0.00563) | 78.47th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.56% (0.00563) | 77.04th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.56% (0.00563) | 74.33th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.14% (0.01136) | 59.45th | v2 (v2022.01.01) |
| Oct 18, 2022 | 1.14% (0.01136) | 58.28th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.14% (0.01136) | 56.27th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.14% (0.01136) | 34.23th | v2 (v2022.01.01) |
References (3)
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161005-dhcp2 vendor-advisoryx_refsource_CISCOVendor Advisory
- http://www.securityfocus.com/bid/93419 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1036949 vdb-entryx_refsource_SECTRACK
| Link | Providers | Tags |
|---|---|---|
| http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161005-dhcp2 | vendor-advisoryx_refsource_CISCOVendor Advisory | |
| http://www.securityfocus.com/bid/93419 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id/1036949 | vdb-entryx_refsource_SECTRACK |
Change history (0)
No recorded changes yet.