8.6

CVE-2019-1967: cisco cisco nx-os software Resource Management Errors

CVSS: 8.6v3.0HighModified
Published 29-08-2019Last modified 19-11-2024
Open JSON

Vulnerability summary

CVE-2019-1967 is a high (CVSS 8.6) Resource Management Errors vulnerability in cisco cisco nx-os software. EPSS estimates a 1.99% chance of exploitation in the next 30 days, higher than 80.4% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.6/10
010
High · v3.0 (CVE.org)
EPSS score
1.99%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 29-08-2019
    PublishedVulnerability first disclosed.
  2. 19-11-2024
    Last modifiedVulnerability information updated.

Description

A vulnerability in the Network Time Protocol (NTP) feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to excessive use of system resources when the affected device is logging a drop action for received MODE_PRIVATE (Mode 7) NTP packets. An attacker could exploit this vulnerability by flooding the device with a steady stream of Mode 7 NTP packets. A successful exploit could allow the attacker to cause high CPU and memory usage on the affected device, which could cause internal system processes to restart or cause the affected device to unexpectedly reload. Note: The NTP feature is enabled by default.

CVSS metrics

4 scores · 2 sources · 3 versions

EPSS trend

Probability

1.99%

Chance of exploitation in the next 30 days

Percentile

80%

Versus all other CVEs

30-day change

0.00 pp

From 1.99% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.99%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Cisco2 products
  • cisco nx-os software≥ unspecified, < 8.3(2)
  • nx-os6.2 | 7.3 | 8.1 | 8.2 | 8.3 | 6.0\(2\)a8\(9.7\) | 6.0\(2\)u6 | 7.0\(3\)i | 9.2 | 9.2\(1\) | 6.0\(2\)a8 | 7.0\(3\)i7 | 7.0\(3\)f | 7.1\(4\) | 7.1\(4\)n1\(1\) | 7.1\(5\) | 7.2 | 7.3\(2\)d1\(1\) | 8.0 | 8.3\(2\)s5

1 vendor · 2 products

References

1 links