8.6

CVE-2019-1751: cisco cisco ios software Improper Input Validation

CVSS: 8.6v3.0HighModified
Published 28-03-2019Last modified 19-11-2024
Open JSON

Vulnerability summary

CVE-2019-1751 is a high (CVSS 8.6) Improper Input Validation vulnerability in cisco cisco ios software. EPSS estimates a 2.52% chance of exploitation in the next 30 days, higher than 84.5% 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
2.52%
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. 28-03-2019
    PublishedVulnerability first disclosed.
  2. 19-11-2024
    Last modifiedVulnerability information updated.

Description

A vulnerability in the Network Address Translation 64 (NAT64) functions of Cisco IOS Software could allow an unauthenticated, remote attacker to cause either an interface queue wedge or a device reload. The vulnerability is due to the incorrect handling of certain IPv4 packet streams that are sent through the device. An attacker could exploit this vulnerability by sending specific IPv4 packet streams through the device. An exploit could allow the attacker to either cause an interface queue wedge or a device reload, resulting in a denial of service (DoS) condition.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

2.52%

Chance of exploitation in the next 30 days

Percentile

85%

Versus all other CVEs

30-day change

0.00 pp

From 2.52% on 18-09-2026

18-09-202618-10-2026
EPSS score
2.52%

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 ios software≥ 15.0, < 16.0
  • ios15.4\(1\)cg1 | 15.4\(1\)t | 15.4\(1\)t1 | 15.4\(1\)t2 | 15.4\(1\)t3 | 15.4\(1\)t4 | 15.4\(2\)t | 15.4\(2\)t1 | 15.4\(2\)t2 | 15.4\(2\)t3 | 15.4\(2\)t4 | 15.4\(3\)m | 15.4\(3\)m1 | 15.4\(3\)m2 | 15.4\(3\)m3 | 15.4\(3\)m4 | 15.4\(3\)m5 | 15.4\(3\)m6 | 15.4\(3\)m6a | 15.4\(3\)m7 | 15.4\(3\)m7a | 15.4\(3\)m8 | 15.4\(3\)m9 | 15.4\(3\)m10 | 15.5\(1\)t | 15.5\(1\)t1 | 15.5\(1\)t2 | 15.5\(1\)t3 | 15.5\(1\)t4 | 15.5\(2\)t | 15.5\(2\)t1 | 15.5\(2\)t2 | 15.5\(2\)t3 | 15.5\(2\)t4 | 15.5\(2\)xb | 15.5\(3\)m | 15.5\(3\)m0a | 15.5\(3\)m1 | 15.5\(3\)m2 | 15.5\(3\)m2a | 15.5\(3\)m3 | 15.5\(3\)m4 | 15.5\(3\)m4a | 15.5\(3\)m4b | 15.5\(3\)m4c | 15.5\(3\)m5 | 15.5\(3\)m5a | 15.5\(3\)m6 | 15.5\(3\)m6a | 15.5\(3\)m7 | 15.5\(3\)m8 | 15.6\(1\)t | 15.6\(1\)t0a | 15.6\(1\)t1 | 15.6\(1\)t2 | 15.6\(1\)t3 | 15.6\(2\)t | 15.6\(2\)t0a | 15.6\(2\)t1 | 15.6\(2\)t2 | 15.6\(2\)t3 | 15.6\(3\)m | 15.6\(3\)m0a | 15.6\(3\)m1 | 15.6\(3\)m1a | 15.6\(3\)m1b | 15.6\(3\)m2 | 15.6\(3\)m2a | 15.6\(3\)m3 | 15.6\(3\)m3a | 15.6\(3\)m4 | 15.6\(3\)m5 | 15.7\(3\)m | 15.7\(3\)m0a | 15.7\(3\)m1 | 15.7\(3\)m2 | 15.7\(3\)m3 | 15.8\(3\)m | 15.8\(3\)m0a | 15.8\(3\)m0b

1 vendor · 2 products

References

2 links