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Fencer Vulns
medium 6.7

CVE-2019-1615 json

Cisco NX-OS Software Image Signature Verification Vulnerability

published 2019-03-11 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-10172

cvss
6.7
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 15%
public exploits
0
none known

Summary

A vulnerability in the Image Signature Verification feature of Cisco NX-OS Software could allow an authenticated, local attacker with administrator-level credentials to install a malicious software image on an affected device. The vulnerability is due to improper verification of digital signatures for software images. An attacker could exploit this vulnerability by loading an unsigned software image on an affected device. A successful exploit could allow the attacker to boot a malicious software image. Note: The fix for this vulnerability requires a BIOS upgrade as part of the software upgrade. For additional information, see the Details section of this advisory. Nexus 3000 Series Switches are affected running software versions prior to 7.0(3)I7(5). Nexus 9000 Series Fabric Switches in ACI Mode are affected running software versions prior to 13.2(1l). Nexus 9000 Series Switches in Standalone NX-OS Mode are affected running software versions prior to 7.0(3)I7(5). Nexus 9500 R-Series Line Cards and Fabric Modules are affected running software versions prior to 7.0(3)F3(5).

Patch / fix

  • Cisco Nexus 3000 Series Switches 7.0(3)I7(5)
  • Cisco Nexus 9000 Series Fabric Switches in ACI Mode 13.2(1l)
  • Cisco Nexus 9000 Series Switches in Standalone NX-OS Mode 7.0(3)I7(5)
  • Cisco Nexus 9500 R-Series Line Cards and Fabric Modules 7.0(3)F3(5)

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
23 mo ago

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 6.7 CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD 3.0 6.7 CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 4.6 AV:L/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • Cisco Nexus 3000 Series Switches
  • Cisco Nexus 9000 Series Fabric Switches in ACI Mode
  • Cisco Nexus 9000 Series Switches in Standalone NX-OS Mode
  • Cisco Nexus 9500 R-Series Line Cards and Fabric Modules

Classification

Weakness
  • CWE-347 Improper Verification of Cryptographic Signature

References

Sources

Fencer Vulns 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.