CVE-2026-86157

Exposure of Privileged IPC Functionality in Progress Telerik Fiddler Everywhere

MEDIUM
5.6
CVSS Score
Published: September 29, 2026 at 06:34 AM UTC
Updated: September 30, 2026 at 04:19 PM UTC
1 product affected across 1 vendorTelerik Fiddler Everywhere

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Severity
MEDIUM5.6
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

Exposure of privileged IPC functionality in Progress Telerik Fiddler Everywhere before version 8.2.0 allows a local, low-privileged attacker who can modify application launch parameters and persuade a user to start the application to replace the application UI or settings with attacker-controlled content. Successful exploitation could result in disclosure of OAuth authentication tokens, execution of locally accessible programs, or unauthorized modification of application-generated configuration files.

Affected

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

1.0.0 ≤ v < 8.2.01.0.0
Affected range stops below 8.2.0, so it looks safe — our inference, not a vendor statement

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

5.6MEDIUMProgressSoftware
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-749

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