CVE-2023-28802

mediumpriority · track · 22EPSS 0.002 · 14 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.23% (14th) EPSS

CVSS 5.4 · medium

Is it mine?

2 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · cert_bund

EPSS · scored 2026-10-27

An Improper Validation of Integrity Check Value in Zscaler Client Connector on Windows allows an authenticated user to disable ZIA/ZPA by interrupting the service restart from Zscaler Diagnostics. This issue affects Client Connector: before 4.2.0.149.

cvss

Technical severity, 0–10. One row per scoring source.

5.4

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:Lprimary · NVD / NIST USexploitability 2.8 · impact 2.5

v3.14.9mediumCVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:Nsecondary · ENISA EU

v3.14.9mediumCVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:Nsecondary · cve@zscaler.comexploitability 0.7 · impact 4.2

v3.15mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-354USprimary

affected products (2)

Products and version ranges known to be affected.

Zscaler Client Connector0 → 4.2.0.149enisa_euvdEU
zscaler client connector< 4.2.0.149nvdUScpe:2.3:a:zscaler:client_connector:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-2988ZScaler Client Connector: Schwachstelle ermöglicht Denial of ServiceDeutsch2023-11-21csaf · cert_bundDE
Ein lokaler Angreifer kann eine Schwachstelle in ZScaler Client Connector ausnutzen, um einen Denial of Service Angriff durchzuführen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd cert_bund NVD CVE.org MITRE

published 2023-11-21modified 2026-06-17

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+407 more

references (5)

External citations — patches, advisories, analysis.

scry

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