CVE-2026-86157
Exposure of Privileged IPC Functionality in Progress Telerik Fiddler Everywhere
- Published
- Updated
- Reserved
- Assigned by
- ProgressSoftware
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| ProgressSoftwareCNA (assigner) | 3.1 | Medium5.6 | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N |
| NVDNVD · Awaiting Analysis | 3.1 | Medium5.6 | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.12% · top 98% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.6.
Weakness
Affected products
Progress Software · Progress® Telerik® Fiddler® Everywhere
- affected 1.0.0 – < 8.2.0
What to do
Workaround: Users should verify that Fiddler Everywhere shortcuts have not been modified with additional command-line arguments, verify the configured browser executable path, and avoid using application-generated authentication links when manual authentication is available.
References (1)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-86157)Record last updated .