CVE-2020-3535

Cisco Webex Teams Client for Windows DLL Hijacking Vulnerability

HIGH
8.4
CVSS Score
Published: October 8, 2020 at 04:20 AM UTC
Updated: June 17, 2026 at 03:18 AM UTC
1 product affected across 1 vendorWebex Teams

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Severity
HIGH8.4
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

A vulnerability in the loading mechanism of specific DLLs in the Cisco Webex Teams client for Windows could allow an authenticated, local attacker to load a malicious library. To exploit this vulnerability, the attacker needs valid credentials on the Windows system. The vulnerability is due to incorrect handling of directory paths at run time. An attacker could exploit this vulnerability by placing a malicious DLL file in a specific location on the targeted system. This file will execute when the vulnerable application launches. A successful exploit could allow the attacker to execute arbitrary code on the targeted system with the privileges of another user’s account.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

3.0.13464.0 ≤ v ≤ 3.0.16040.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-427

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