CVE-2026-86157

medium

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.

References

https://www.telerik.com/fiddler/fiddler-everywhere/documentation/knowledge-base/kb-security-exposed-dangerous-method-or-function-cve-2026-86157

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-88648

Details

Source: Mitre, NVD

Published: 2026-09-29

Updated: 2026-09-30

Risk Information

CVSS v2

Base Score: 5.2

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 5.6

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N

Severity: Medium

EPSS

EPSS: 0.00119