CVE-2021-26738

highpriority · track · 31EPSS 0.002 · 14 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.23% (14th) EPSS

CVSS 7.8 · high

Is it mine?

3 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

Zscaler Client Connector for macOS prior to 3.7 had an unquoted search path vulnerability via the PATH variable. A local adversary may be able to execute code with root privileges.

cvss

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

7.8

010

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

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.9

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · cve@zscaler.comexploitability 1.8 · impact 5.9

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

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

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-426USprimary

affected products (3)

Products and version ranges known to be affected.

ZScaler Client Connector < 3.6all versionscert_bundDEcpe:/a:zscaler:client_connector:3.6::macos
Zscaler Client Connector0 → 3.7enisa_euvdEU
zscaler client connector< 3.7nvdUScpe:2.3:a:zscaler:client_connector:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-2733ZScaler Client Connector: Mehrere SchwachstellenDeutsch2023-10-23csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in ZScaler Client Connector ausnutzen, um beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, einen Denial-of-Service-Zustand auszulösen, Dateien zu manipulieren oder seine Privilegien zu erweitern.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd NVD CVE.org MITRE

published 2023-10-23modified 2026-06-17

related (1,305)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2022-23748US	high7.8OT critical	8.33% (95th)	KEV	2022-11-17
mDNSResponder.exe is vulnerable to DLL Sideloading attack. Executable improperly specifies how to load the DLL, from which folder and under what conditions. In these scenarios, a m…
CVE-2022-22047US	high7.2OT critical	18.8% (97th)	KEV	2022-07-12
Windows Client Server Run-time Subsystem (CSRSS) Elevation of Privilege Vulnerability
CVE-2012-1854US	medium6.9OT critical	20.9% (98th)	KEV	2012-07-10
Untrusted search path vulnerability in VBE6.dll in Microsoft Office 2003 SP3, 2007 SP2 and SP3, and 2010 Gold and SP1; Microsoft Visual Basic for Applications (VBA); and Summit Mic…
CVE-2023-38408US	critical9.8	79.7% (100th)	Exploit	2023-07-20
The PKCS#11 feature in ssh-agent in OpenSSH before 9.3p2 has an insufficiently trustworthy search path, leading to remote code execution if an agent is forwarded to an attacker-con…
CVE-2015-0096US	high9.3	71.0% (99th)	Exploit	2015-03-11
Untrusted search path vulnerability in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Serv…

+1300 more

references (4)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan