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Zscaler

Records59All Threatist records
Exploited (KEV)0None in CISA KEV
CVSS critical10CVSS 9.0–10.0
CVSS high36CVSS 7.0–8.9

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Zscaler records in CISA KEV

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59 records

Priority MEDIUM 48

Multiple vulnerabilities on affected versions of Zscaler Client Connector allow remote code execution, giving an unauthenticated, unprivileged user the ability to execute arbitrary code in the ZCC context.

CVSS 3.1CRITICAL 9.1 Network No auth No interaction EPSS 0.00664 Published 2026-08-24 Fixed in Windows: 4.6.0.457, 4.7.0.317 +10 CWE-20
Priority MEDIUM 48

An authentication bypass issue exists in communications between affected versions of the Zscaler Client Connector and the Zscaler Client Connector Portal.

CVSS 3.1CRITICAL 9.1 Network No auth No interaction EPSS 0.00529 Published 2026-08-24 Fixed in Windows: 4.6.0.457, 4.7.0.317 +10 CWE-304
Priority MEDIUM 44

An Improper Input Validation vulnerability in Zscaler Client Connector on MacOS allows OS Command Injection.

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00748 Published 2024-08-06 Fixed in 4.2 CWE-20
TI-2025-34691 CVE-2025-54982 · GHSA-84x5-5f67-wjp4

SAML 2.0 Public Key Validation Issue

Priority MEDIUM 43

An improper verification of cryptographic signature in Zscaler's SAML authentication mechanism on the server-side allowed an authentication abuse.

CVSS 3.1CRITICAL 9.6 Network Low privileges No interaction EPSS 0.00414 Published 2025-08-05 Fixed in 6.2r CWE-347
TI-2024-15526 CVE-2024-23480 · GHSA-gvpq-95j2-mc36

Insecure MacOS code sign check fallback

Priority MEDIUM 43

A fallback mechanism in code sign checking on macOS may allow arbitrary code execution.

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00301 Published 2024-05-01 Fixed in 4.2 CWE-347
Priority MEDIUM 43

An Improper Link Resolution Before File Access ('Link Following') vulnerability in Zscaler Client Connector on Mac allows a system file to be overwritten.This issue affects Zscaler Client Connector on Mac : before 3.7.

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00474 Published 2024-05-02 Fixed in 3.7 CWE-59
TI-2023-13311 CVE-2023-28801 · GHSA-wfp5-6m78-crh3

Improper SAML signature verification

Priority MEDIUM 43

An Improper Verification of Cryptographic Signature in the SAML authentication of the Zscaler Admin UI allows a Privilege Escalation.This issue affects Admin UI: from 6.2 before 6.2r.

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00391 Published 2023-08-31 Fixed in 6.2 (current) CWE-347
TI-2023-13308 CVE-2023-28798 · GHSA-wxgw-4g8w-q999

Out-of-bounds write to heap in pacparser

Priority MEDIUM 43

An out-of-bounds write to heap in the pacparser library on Zscaler Client Connector on Mac may lead to arbitrary code execution.

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00435 Published 2024-05-02 Fixed in 3.7.0.172 CWE-122
TI-2023-13315 CVE-2023-28805 · GHSA-5f5r-qwxj-xhxq

ZCC on Linux privilege escalation

Priority MEDIUM 42

An Improper Input Validation vulnerability in Zscaler Client Connector on Linux allows Privilege Escalation.

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00372 Published 2023-10-23 Fixed in 1.4.0.105 CWE-78
TI-2026-42527 CVE-2026-59565 · GHSA-c34f-p2fw-3mjr

Local and kernel denial-of-service

Priority MEDIUM 41

A remotely exploitable buffer overflow bug can cause a local and kernel denial-of-service attack on affected versions of Zscaler Client Connector on Windows.

CVSS 3.1HIGH 8.8 Network Low privileges No interaction EPSS 0.00477 Published 2026-08-24 Fixed in Windows: 4.6.0.457, 4.7.0.317 +2 CWE-229
Priority MEDIUM 41

An Improper Verification of Cryptographic Signature vulnerability in Zscaler Client Connector on Linux allows replacing binaries.This issue affects Linux Client Connector: before 1.4.0.105

CVSS 3.1HIGH 8.2 Network No auth No interaction EPSS 0.00285 Published 2023-10-23 Fixed in 1.4.0.105 CWE-347
Priority MEDIUM 40

Anti-tampering protection of the Zscaler Client Connector can be bypassed under certain conditions when running the Repair App functionality.

CVSS 3.1HIGH 8.8 Network Low privileges No interaction EPSS 0.00371 Published 2024-04-30 Fixed in 4.2.1 CWE-367
Priority LOW 39

Multiple vulnerabilities on affected versions of Zscaler Client Connector allow local privilege escalation, giving an unprivileged user the ability to execute arbitrary code in a privileged context.

CVSS 3.1HIGH 8.8 Local Low privileges No interaction EPSS 0.00149 Published 2026-08-24 Fixed in Windows: 4.6.0.457, 4.7.0.317 +7 CWE-280
Priority LOW 38

A locally exploitable buffer overflow bug can cause a local denial-of-service attack on affected versions of Zscaler Client Connector on Android and ChromeOS.

CVSS 3.1HIGH 8.4 Local No auth No interaction EPSS 0.00175 Published 2026-08-24 Fixed in Android: 4.2, ChromeOS: 4.2 CWE-229
TI-2023-13310 CVE-2023-28800 · GHSA-crh5-rq78-8m4h

Output encoding missing in redrurl parameter

Priority LOW 38

When using local accounts for administration, the redirect url parameter was not encoded correctly, allowing for an XSS attack providing admin login.

CVSS 3.1HIGH 8.1 Network No auth User interaction EPSS 0.00548 Published 2023-06-22 Fixed in 3.9 Mac, 3.7 Win +4 CWE-79
TI-2023-13309 CVE-2023-28799 · GHSA-frc9-g2r4-48w5

Open redirect in Zscaler Client Connector

Priority LOW 38

A URL parameter during login flow was vulnerable to injection.

CVSS 3.1HIGH 8.2 Network Low privileges No interaction EPSS 0.00445 Published 2023-06-22 Fixed in 3.9 Mac, 3.7 Win +4 CWE-1287
TI-2026-20768 CVE-2026-25687 · GHSA-4wwc-hgc4-j27v

ZCC race condition in ZPA tunnel handler

Priority LOW 37

A race condition in the ZPA tunnel handler of affected versions of Zscaler Client Connector (ZCC) allows a heap corruption, resulting in a denial of service (client crash) and potentially arbitrary code execution in the…

CVSS 3.1HIGH 8.1 Network No auth No interaction EPSS 0.0038 Published 2026-09-14 Fixed in 4.6.0.486, 4.7.0.350 +2 CWE-366
Priority LOW 36

An improper input validation vulnerability in Zscaler Client Connector on Android and ChromeOS allows an attacker to potentially bypass Zscaler controls.

CVSS 3.1HIGH 8.1 Local High privileges No interaction EPSS 0.00176 Published 2026-09-14 Fixed in Android: 4.2.0.152, ChromeOS: 4.2.0.152 CWE-20
TI-2024-15527 CVE-2024-23482 · GHSA-vw2x-qjjw-279v

ZScalerService Local Privilege Escalation

Priority LOW 36

The ZScaler service is susceptible to a local privilege escalation vulnerability found in the ZScalerService process.

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00275 Published 2024-03-26 Fixed in 4.2.0.241 CWE-20
Priority LOW 36

In some rare cases, there is a password type validation missing in Revert Password check and for some features it could be disabled.

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00236 Published 2024-03-26 Fixed in 4.3.0.121 CWE-280
TI-2023-13303 CVE-2023-28793 · GHSA-g99m-655w-j95w

Heap Based Buffer Overflow in Library

Priority LOW 36

Buffer overflow vulnerability in the signelf library used by Zscaler Client Connector on Linux allows Code Injection.

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00308 Published 2023-10-23 Fixed in 1.3.1.6 CWE-94
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