CVE-2021-1240

Cisco Proximity Desktop for Windows DLL Hijacking Vulnerability

HIGH
7.3
CVSS Score
Published: January 13, 2021 at 09:17 PM UTC
Updated: June 17, 2026 at 03:31 AM UTC
1 product affected across 1 vendorProximity

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Severity
HIGH7.3
Exploit prediction
EPSS 1.0%
SSVC
No known exploit

Description

A vulnerability in the loading process of specific DLLs in Cisco Proximity Desktop for Windows could allow an authenticated, local attacker to load a malicious library. To exploit this vulnerability, the attacker must have valid credentials on the Windows system. This 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.

v < 3.1.0
Affected range stops below 3.1.0, so it looks safe — our inference, not a vendor statement

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 automatablePartial impact

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

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-427

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