Progress Software Progress® Telerik® Fiddler® Classic

4 known vulnerabilities in Progress Software Progress® Telerik® Fiddler® Classic, with patch priority, exploit likelihood and the news covering them.

Latest vulnerabilities

CVE-2026-77805 CVSS 7.9 high In Progress® Telerik® Fiddler® Classic for Windows, versions prior to v6.0.20262.10021, the integrity check applied to the external helper…
CVE-2026-77804 CVSS 6.6 medium In Progress® Telerik® Fiddler® Classic for Windows, versions prior to v6.0.20262.10021, a time-of-check time-of-use (TOCTOU) race…
CVE-2026-77803 CVSS 3.6 low In Progress® Telerik® Fiddler® Classic for Windows, versions prior to v6.0.20262.10021, front-end request desynchronization is possible in…
CVE-2026-77802 CVSS 6.3 medium In Progress® Telerik® Fiddler® Classic for Windows, versions prior to v6.0.20262.10021, HTTP request smuggling is possible in the proxy…