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Fencer Intel
high 7.8

CVE-2019-1605 json

Cisco NX-OS Software NX-API Arbitrary Code Execution Vulnerability

published 7y ago modified 4mo ago also EUVD-2019-10162

cvss
7.8
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 45%
public exploits
0
none known

Summary

A vulnerability in the NX-API feature of Cisco NX-OS Software could allow an authenticated, local attacker to execute arbitrary code as root. The vulnerability is due to incorrect input validation in the NX-API feature. An attacker could exploit this vulnerability by sending a crafted HTTP or HTTPS request to an internal service on an affected device that has the NX-API feature enabled. A successful exploit could allow the attacker to cause a buffer overflow and execute arbitrary code as root. Note: The NX-API feature is disabled by default. MDS 9000 Series Multilayer Switches are affected in versions prior to 8.1(1). Nexus 3000 Series Switches are affected in versions prior to 7.0(3)I4(8) and 7.0(3)I7(1). Nexus 3500 Platform Switches are affected in versions prior to 6.0(2)A8(8). Nexus 3600 Platform Switches are affected in versions prior to 7.0(3)F3(5). Nexus 2000, 5500, 5600, and 6000 Series Switches are affected in versions prior to 7.3(2)N1(1). Nexus 7000 and 7700 Series Switches are affected in versions prior to 7.3(3)D1(1). Nexus 9000 Series Switches in Standalone NX-OS Mode are affected in versions prior to 7.0(3)I4(8) and 7.0(3)I7(1). Nexus 9500 R-Series Line Cards and Fabric Modules are affected in versions prior to 7.0(3)F3(5).

Patch / fix

  • Cisco MDS 9000 Series Multilayer Switches 8.1(1)
  • Cisco Nexus 3000 Series Switches 7.0(3)I4(8), 7.0(3)I7(1)
  • Cisco Nexus 3500 Platform Switches 6.0(2)A8(8)
  • Cisco Nexus 3600 Platform Switches 7.0(3)F3(5)
  • Cisco Nexus 2000, 5500, 5600, and 6000 Series Switches 7.3(2)N1(1)
  • Cisco Nexus 7000 and 7700 Series Switches 7.3(3)D1(1)
  • Cisco Nexus 9000 Series Switches in Standalone NX-OS Mode 7.0(3)I4(8), 7.0(3)I7(1)
  • Cisco Nexus 9500 R-Series Line Cards and Fabric Modules 7.0(3)F3(5)

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
last yr.

Exploit prediction

0.54% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.0 7.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Affected products

  • Cisco MDS 9000 Series Multilayer Switches
  • Cisco Nexus 3000 Series Switches
  • Cisco Nexus 3500 Platform Switches
  • Cisco Nexus 3600 Platform Switches
  • Cisco Nexus 2000, 5500, 5600, and 6000 Series Switches
  • Cisco Nexus 7000 and 7700 Series Switches
  • Cisco Nexus 9000 Series Switches in Standalone NX-OS Mode
  • Cisco Nexus 9500 R-Series Line Cards and Fabric Modules

Classification

Weakness
  • CWE-20 Improper Input Validation
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.