8.6

CVE-2019-1858: cisco cisco firepower extensible operating system (fxos) Improper Input Validation

CVSS: 8.6v3.0HighModified
Published 16-05-2019Last modified 19-11-2024
Open JSON

Vulnerability summary

CVE-2019-1858 is a high (CVSS 8.6) Improper Input Validation vulnerability in cisco cisco firepower extensible operating system (fxos). EPSS estimates a 2.39% chance of exploitation in the next 30 days, higher than 83.6% 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
2.39%
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. 16-05-2019
    PublishedVulnerability first disclosed.
  2. 19-11-2024
    Last modifiedVulnerability information updated.

Description

A vulnerability in the Simple Network Management Protocol (SNMP) input packet processor of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause the SNMP application to leak system memory, which could cause an affected device to restart unexpectedly. The vulnerability is due to improper error handling when processing inbound SNMP packets. An attacker could exploit this vulnerability by sending multiple crafted SNMP packets to an affected device. A successful exploit could allow the attacker to cause the SNMP application to leak system memory because of an improperly handled error condition during packet processing. Over time, this memory leak could cause the SNMP application to restart multiple times, leading to a system-level restart and a denial of service (DoS) condition.

CVSS metrics

4 scores · 2 sources · 3 versions

EPSS trend

Probability

2.39%

Chance of exploitation in the next 30 days

Percentile

84%

Versus all other CVEs

30-day change

0.00 pp

From 2.39% on 18-09-2026

18-09-202618-10-2026
EPSS score
2.39%

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

Cisco4 products
  • cisco firepower extensible operating system (fxos)≥ unspecified, < n/a
  • firepower_extensible_operating_system≥ 2.6, < 2.6.1.131
  • fx-os< 2.2.2.91 | ≥ 2.3, < 2.3.1.130 | ≥ 2.4, < 2.4.1.222
  • nx-os< 8.1\(1\) | < 7.0\(3\)i4\(8\) | ≥ 7.0\(3\)i7, < 7.0\(3\)i7\(2\) | ≥ 7.0\(3\), < 7.0\(3\)f3\(1\) | < 7.1\(5\)n1\(1b\) | ≥ 7.3, < 7.3\(4\)n1\(1a\) | < 6.2\(22\) | ≥ 7.2, < 7.2\(0\)d1\(1\) | ≥ 8.0, < 8.1\(1\) | < 14.0\(2c\) | ≥ 14.1, < 14.1\(1i\) | < 6.0\(2\)a8\(4\) | < 5.2\(1\)sv3\(4.1a\)

1 vendor · 4 products

References

2 links