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CVE-2018-0435

29
FAUCET Score

CVE-2018-0435 describes a critical vulnerability in the Cisco Umbrella API, affecting Cisco Umbrella products. This flaw stems from insufficient authentication configurations, allowing an authenticated, remote attacker to view and modify data across their own and other organizations. With a CVSS score of 9.1 (CRITICAL), the vulnerability is easily exploitable over the network with low complexity, requiring only low privileges, and can lead to significant impact on confidentiality, integrity, and availability. While there is no evidence of active exploitation (KEV: No) and no public exploit code (Metasploit, Nuclei, ExploitDB: None), the vulnerability has garnered considerable community attention with 11 mentions and one media article.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:cisco:umbrella:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.1CRITICAL

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
HIGH
Exploitability Score
3.1
Impact Score
5.3
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.09%
Probability of exploitation in next 30 days
EPSS Percentile
62.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0109 is in the 69th percentile among its peer group of 1,119 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.9 Bluesky, 0.5 Mastodon, and 1.6 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20180905-umbrella-api
Vendor Advisory
securityfocus.com / bid/105283
Third Party AdvisoryVDB Entry