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CVE-2016-4523

77
FAUCET Score

CVE-2016-4523 is a denial-of-service vulnerability affecting the WAP interface in Trihedral VTScada versions 8.x through 11.x prior to 11.2.02. This flaw, rated High severity (CVSS 7.5), allows unauthenticated remote attackers to cause an out-of-bounds read and application crash with low attack complexity. The vulnerability is actively exploited, as indicated by its presence in CISA’s KEV catalog, despite a lack of public exploit code on platforms like Metasploit or ExploitDB. It has garnered significant community discussion and media coverage, highlighting its importance for operational technology security.

Impacted Technologies

VendorProductVersion(s)CPE
>= 8.0.05, < 11.2.02CPE matchmatch criteria
cpe:2.3:a:trihedral:vtscada:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
31.39%
Probability of exploitation in next 30 days
EPSS Percentile
98.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Added to KEV · Apr 15, 2022
This CVE's current EPSS score of 0.3139 is in the 97th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
ics-cert.us-cert.gov / advisories/ICSA-16-159-01
Third Party AdvisoryUS Government Resource
securityfocus.com / bid/91077
Broken LinkThird Party AdvisoryVDB Entry
zerodayinitiative.com / advisories/ZDI-16-405
Third Party AdvisoryVDB Entry