Progress Software Progress® Telerik® Fiddler® Classic

• CVE-2026-77805 High 7.9 Weak Executable Signature Verification Vulnerability in Progress® Telerik® Fiddler® Classic <0.1%
• CVE-2026-77804 Medium 6.6 Time-of-check Time-of-use (TOCTOU) Race Condition in Root Certificate Installation in Progress® Telerik® Fiddler® Classic <0.1%
• CVE-2026-77803 Low 3.6 Front-end Desynchronization Vulnerability in Progress® Telerik® Fiddler® Classic <0.1%
• CVE-2026-77802 Medium 6.3 HTTP Request Smuggling Vulnerability in Progress® Telerik® Fiddler® Classic 0.1%