Improper input validation in Cisco Nexus 7000 Series Switches
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
An Access-Control Filtering Mechanisms Bypass vulnerability in certain access-control filtering mechanisms on Cisco Nexus 7000 Series Switches could allow an unauthenticated, remote attacker to bypass defined traffic configured within an access control list (ACL) on the affected system. More Information: CSCtz59354. Known Affected Releases: 5.2(4) 6.1(3)S5 6.1(3)S6 6.2(1.121)S0 7.2(1)D1(1) 7.3(0)ZN(0.161) 7.3(1)N1(0.1). Known Fixed Releases: 7.3(0)D1(1) 6.2(2) 6.1(5) 8.3(0)KMT(0.24) 8.3(0)CV(0.337) 7.3(1)N1(1) 7.3(0)ZN(0.210) 7.3(0)ZN(0.177) 7.3(0)ZD(0.194) 7.3(0)TSH(0.99) 7.3(0)SC(0.14) 7.3(0)RSP(0.7) 7.3(0)N1(1) 7.3(0)N1(0.193) 7.3(0)IZN(0.13) 7.3(0)IB(0.102) 7.3(0)GLF(0.44) 7.3(0)D1(0.178) 7.1(0)D1(0.14) 7.0(3)ITI2(1.6) 7.0(3)ISH1(2.13) 7.0(3)IFD6(0.78) 7.0(3)IFD6(0) 7.0(3)IDE6(0.12) 7.0(3)IDE6(0) 7.0(3)I2(1) 7.0(3)I2(0.315) 7.0(1)ZD(0.3) 7.0(0)ZD(0.84) 6.2(1.149)S0 6.2(0.285) 6.1(5.32)S0 6.1(4.97)S0 6.1(2.30)S0.
Why it matters now
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 |
|---|---|---|---|---|---|
| — | Cisco Nexus 7000 Series Switches | Cisco Nexus 7000 Series Switches | — | No fix listed | CNA |
- Cisco Nexus 7000 Series Switches Vendor— Affected Cisco Nexus 7000 Series Switches Fixed in — No fix listed CNA
CPE configurations NVD · 15
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:nx-os:5.2\(4\):*:*:*:*:*:*:* | 5.2(4) | Vulnerable | Cisco |
| cpe:2.3:o:cisco:nx-os:6.1\(3\)s5:*:*:*:*:*:*:* | 6.1(3)s5 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:nx-os:6.1\(3\)s6:*:*:*:*:*:*:* | 6.1(3)s6 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:nx-os:6.2\(1.121\)s0:*:*:*:*:*:*:* | 6.2(1.121)s0 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:nx-os:7.2\(1\)d1\(1\):*:*:*:*:*:*:* | 7.2(1)d1(1) | Vulnerable | Cisco |
| cpe:2.3:o:cisco:nx-os:7.3\(0\)zn\(0.161\):*:*:*:*:*:*:* | 7.3(0)zn(0.161) | Vulnerable | Cisco |
| cpe:2.3:o:cisco:nx-os:7.3\(1\)n1\(0.1\):*:*:*:*:*:*:* | 7.3(1)n1(0.1) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:nexus_7000_10-slot:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:nexus_7000_18-slot:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:nexus_7000_4-slot:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
- cpe:2.3:o:cisco:nx-os:5.2\(4\):*:*:*:*:*:*:* Versions 5.2(4) Vulnerable ·Cisco
- cpe:2.3:o:cisco:nx-os:6.1\(3\)s5:*:*:*:*:*:*:* Versions 6.1(3)s5 Vulnerable ·Cisco
- cpe:2.3:o:cisco:nx-os:6.1\(3\)s6:*:*:*:*:*:*:* Versions 6.1(3)s6 Vulnerable ·Cisco
- cpe:2.3:o:cisco:nx-os:6.2\(1.121\)s0:*:*:*:*:*:*:* Versions 6.2(1.121)s0 Vulnerable ·Cisco
- cpe:2.3:o:cisco:nx-os:7.2\(1\)d1\(1\):*:*:*:*:*:*:* Versions 7.2(1)d1(1) Vulnerable ·Cisco
- cpe:2.3:o:cisco:nx-os:7.3\(0\)zn\(0.161\):*:*:*:*:*:*:* Versions 7.3(0)zn(0.161) Vulnerable ·Cisco
- cpe:2.3:o:cisco:nx-os:7.3\(1\)n1\(0.1\):*:*:*:*:*:*:* Versions 7.3(1)n1(0.1) Vulnerable ·Cisco
- cpe:2.3:h:cisco:nexus_7000_10-slot:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:nexus_7000_18-slot:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:nexus_7000_4-slot:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
Show 5 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:h:cisco:nexus_7000_9-slot:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:nexus_7700_10-slot:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:nexus_7700_18-slot:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:nexus_7700_2-slot:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:nexus_7700_6-slot:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
- cpe:2.3:h:cisco:nexus_7000_9-slot:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:nexus_7700_10-slot:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:nexus_7700_18-slot:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:nexus_7700_2-slot:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:nexus_7700_6-slot:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2017-3875
- 2026-10-03 Alias added: GHSA-w838-4jcq-qc2c
References
More Cisco Nx-os vulnerabilities
- TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
- TI-2024-13332 Cisco NX-OS Software CLI Command Injection Vulnerability KEVCVSS 3.1MEDIUM 6.7
- TI-2018-00260 Improper input validation in Cisco NX-OS unknown CVSS 3.0CRITICAL 9.8
- TI-2019-01226 Cisco NX-OS Software Netstack Denial of Service Vulnerability CVSS 3.1HIGH 8.6
- TI-2022-05183 Cisco NX-OS Software Cisco Fabric Services Over IP Denial of Service Vulnerability CVSS 3.1HIGH 8.6
- TI-2022-05182 Cisco Nexus 9000 Series Switches Bidirectional Forwarding Detection Denial of Service Vulnerability CVSS 3.1HIGH 8.6
Sources
- CVE-2017-3875 · CVE Program
- CVE-2017-3875 · NVD
- FIRST EPSS
- GHSA-w838-4jcq-qc2c · 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