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CVE-2023-28802

17
FAUCET Score

CVE-2023-28802 is an integrity check validation vulnerability in Zscaler Client Connector for Windows, affecting versions prior to 4.2.0.149. An authenticated user can exploit this to disable Zscaler Internet Access (ZIA) and Zscaler Private Access (ZPA) by disrupting service restarts initiated from Zscaler Diagnostics. Rated Medium (CVSS 5.4), this vulnerability has a low attack complexity and requires local user privileges, potentially leading to a limited impact on integrity and availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.2.0.149CPE matchmatch criteria
cpe:2.3:a:zscaler:client_connector:*:*:*:*:*:windows:*:*
>= 0, < 4.2.0.149CPE match
cpe:2.3:a:zscaler:client_connector:*:*:*:*:*:chrome_os:*:*

CVSS Data

CVSS version used by this source: 3.1

4.9MEDIUM

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

Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
0.7
Impact Score
4.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.23%
Probability of exploitation in next 30 days
EPSS Percentile
13.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0023 is in the 14th percentile among its peer group of 21,977 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Remediation records are not available for this CVE.

References

help.zscaler.com / client-connector/client-connector-app-release-summary-2023
Release Notes