7.7

CVE-2019-16027: cisco cisco ios xr software Improper Input Validation

CVSS: 7.7v3.0HighModified
Published 26-01-2020Last modified 15-11-2024
Open JSON

Vulnerability summary

CVE-2019-16027 is a high (CVSS 7.7) Improper Input Validation vulnerability in cisco cisco ios xr software. EPSS estimates a 1.51% chance of exploitation in the next 30 days, higher than 74.1% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.7/10
010
High · v3.0 (CVE.org)
EPSS score
1.51%
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. 26-01-2020
    PublishedVulnerability first disclosed.
  2. 15-11-2024
    Last modifiedVulnerability information updated.

Description

A vulnerability in the implementation of the Intermediate System–to–Intermediate System (IS–IS) routing protocol functionality in Cisco IOS XR Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition in the IS–IS process. The vulnerability is due to improper handling of a Simple Network Management Protocol (SNMP) request for specific Object Identifiers (OIDs) by the IS–IS process. An attacker could exploit this vulnerability by sending a crafted SNMP request to the affected device. A successful exploit could allow the attacker to cause a DoS condition in the IS–IS process.

CVSS metrics

4 scores · 2 sources · 3 versions

EPSS trend

Probability

1.51%

Chance of exploitation in the next 30 days

Percentile

74%

Versus all other CVEs

30-day change

0.00 pp

From 1.51% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.51%

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 xr software≥ unspecified, < n/a
  • ios_xr4.3.2 | 5.2.5 | 6.2.2 | 6.2.3 | 6.2.25 | 6.3.3 | 6.4.2 | 6.1.3 | 6.1.4 | 6.5.2 | 6.5.3 | 6.3.15 | 6.6.1 | 6.6.25 | 6.6.2 | 6.1.2 | 6.3.2

1 vendor · 2 products

References

1 links