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CVE-2017-3875


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.


Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.3, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts limited integrity, for affected systems. Impacting 9 products from cisco, from cisco, from cisco and 6 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2017, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.


Published

2017-03-17T22:59:00.470

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 5.3 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:P/A:N

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: PARTIAL
  • Availability Impact: NONE
Exploitability Score

10.0

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-20

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System cisco nx-os 5.2\(4\) Yes
Operating System cisco nx-os 6.1\(3\)s5 Yes
Operating System cisco nx-os 6.1\(3\)s6 Yes
Operating System cisco nx-os 6.2\(1.121\)s0 Yes
Operating System cisco nx-os 7.2\(1\)d1\(1\) Yes
Operating System cisco nx-os 7.3\(0\)zn\(0.161\) Yes
Operating System cisco nx-os 7.3\(1\)n1\(0.1\) Yes
Hardware cisco nexus_7000_10-slot - No
Hardware cisco nexus_7000_18-slot - No
Hardware cisco nexus_7000_4-slot - No
Hardware cisco nexus_7000_9-slot - No
Hardware cisco nexus_7700_10-slot - No
Hardware cisco nexus_7700_18-slot - No
Hardware cisco nexus_7700_2-slot - No
Hardware cisco nexus_7700_6-slot - No

References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For cisco's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.