5.3

CVE-2021-1350: cisco cisco umbrella insights virtual appliance

CVSS: 5.3v3.1MediumModified
Published 20-01-2021Last modified 12-11-2024

Vulnerability summary

CVE-2021-1350 is a medium (CVSS 5.3) vulnerability in cisco cisco umbrella insights virtual appliance. EPSS estimates a 1.30% chance of exploitation in the next 30 days, higher than 69.9% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
1.30%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 20-01-2021
    PublishedVulnerability first disclosed.
  2. 12-11-2024
    Last modifiedVulnerability information updated.

Description

A vulnerability in the web UI of Cisco Umbrella could allow an unauthenticated, remote attacker to negatively affect the performance of this service. The vulnerability exists due to insufficient rate limiting controls in the web UI. An attacker could exploit this vulnerability by sending crafted HTTPS packets at a high and sustained rate. A successful exploit could allow the attacker to negatively affect the performance of the web UI. Cisco has addressed this vulnerability.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.30%

Chance of exploitation in the next 30 days

Percentile

70%

Versus all other CVEs

30-day change

+0.02 pp

From 1.28% on 18-09-2026

18-09-202618-10-2026
EPSS score
1.30%

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

1 vendor · 2 products

References

1 links