{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-86157", "assignerOrgId": "f9fea0b6-671e-4eea-8fde-31911902ae05", "state": "PUBLISHED", "assignerShortName": "ProgressSoftware", "dateReserved": "2026-09-05T09:09:32.191Z", "datePublished": "2026-09-29T06:34:17.555Z", "dateUpdated": "2026-09-29T06:34:17.555Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f9fea0b6-671e-4eea-8fde-31911902ae05", "shortName": "ProgressSoftware", "dateUpdated": "2026-09-29T06:34:17.555Z"}, "title": "Exposure of Privileged IPC Functionality in Progress Telerik Fiddler Everywhere", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-749", "description": "CWE-749 Exposed Dangerous Method or Function", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-122", "descriptions": [{"lang": "en", "value": "CAPEC-122 Privilege Abuse."}]}], "affected": [{"vendor": "Progress Software", "product": "Progress\u00ae Telerik\u00ae Fiddler\u00ae Everywhere", "versions": [{"status": "affected", "version": "1.0.0", "lessThan": "8.2.0", "versionType": "custom"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "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.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "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": [{"url": "https://www.telerik.com/fiddler/fiddler-everywhere/documentation/knowledge-base/kb-security-exposed-dangerous-method-or-function-cve-2026-86157.", "tags": ["vendor-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "availabilityImpact": "NONE", "baseSeverity": "MEDIUM", "baseScore": 5.6, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N"}}], "workarounds": [{"lang": "en", "value": "<div>Users should verify that <b>Fiddler Everywhere</b> 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.</div>", "supportingMedia": [{"type": "text/html", "base64": false, "value": "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."}]}], "credits": [{"lang": "en", "value": "whizarre", "type": "finder"}], "source": {"discovery": "INTERNAL"}, "x_generator": {"engine": "Vulnogram 0.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Progress\u00ae Telerik\u00ae Fiddler\u00ae Everywhere", "vendor": "Progress Software", "versions": [{"lessThan": "8.2.0", "status": "affected", "version": "1.0.0", "versionType": "custom"}]}], "source": "security@progress.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-86157", "lastModified": "2026-09-29T07:16:35.377", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 5.6, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 1.3, "impactScore": 4.2, "source": "security@progress.com", "type": "Secondary"}]}, "published": "2026-09-29T07:16:35.377", "references": [{"source": "security@progress.com", "url": "https://www.telerik.com/fiddler/fiddler-everywhere/documentation/knowledge-base/kb-security-exposed-dangerous-method-or-function-cve-2026-86157."}], "sourceIdentifier": "security@progress.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-749"}], "source": "security@progress.com", "type": "Primary"}]}

{}

{"created": "2026-09-29T08:00:12.450419+00:00", "updated": "2026-09-29T08:00:12.450434+00:00", "vendors": []}