{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64621", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-07-20T11:58:54.524Z", "datePublished": "2026-07-20T12:04:53.788Z", "dateUpdated": "2026-07-20T12:04:53.788Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-07-20T12:04:53.788Z"}, "datePublic": "2026-07-06T00:00:00.000Z", "title": "FreeRDP before 3.28.0 Double-Free via selectedmonitors", "descriptions": [{"lang": "en", "value": "FreeRDP before 3.28.0 (affected 3.x through 3.27.1) contains a double-free vulnerability in freerdp_client_rdp_file_apply_to_settings() (client/common/file.c) when parsing the selectedmonitors field of a .rdp connection file. The MonitorIds array is allocated through the settings object, and a raw non-owning pointer to it is freed on the strtoul error path without clearing settings->MonitorIds, leaving it dangling; at teardown freerdp_settings_free() frees the same buffer again. An attacker who convinces a victim to open a crafted .rdp file with oversized monitor tokens can trigger a size-controlled double-free in any FreeRDP CLI client (xfreerdp/sdl-freerdp/wlfreerdp) in the default configuration."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Double Free", "cweId": "CWE-415", "type": "CWE"}]}], "affected": [{"vendor": "FreeRDP", "product": "FreeRDP", "defaultStatus": "unaffected", "versions": [{"version": "0", "status": "affected", "versionType": "semver", "lessThan": "3.28.0"}, {"version": "3.28.0", "status": "unaffected", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*", "versionEndExcluding": "3.28.0"}]}]}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "baseScore": 9.3, "baseSeverity": "CRITICAL", "exploitMaturity": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS"}, {"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.3, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:H", "version": "3.1"}, "format": "CVSS"}], "references": [{"url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-f27x-frr8-j9hc", "name": "GitHub Security Advisory (GHSA-f27x-frr8-j9hc)", "tags": ["vendor-advisory"]}, {"url": "https://github.com/FreeRDP/FreeRDP/commit/1f7a716d39b5605bb8a83b0c3c97a6ce386609ef", "name": "https://github.com/FreeRDP/FreeRDP/commit/1f7a716d39b5605bb8a83b0c3c97a6ce386609ef", "tags": ["patch"]}, {"name": "VulnCheck Advisory: FreeRDP before 3.28.0 Double-Free via selectedmonitors", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/freerdp-before-double-free-via-selectedmonitors"}], "credits": [{"lang": "en", "value": "DavidKorczynski", "type": "reporter"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

{}

{}

{"bugzilla": {"description": "FreeRDP: FreeRDP: Double-free vulnerability via crafted .rdp file leading to potential remote code execution", "id": "2502766", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502766"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.3", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:H", "status": "draft"}, "cwe": "CWE-1341", "details": ["A flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol. A double-free vulnerability exists when a FreeRDP client processes a specially crafted `.rdp` connection file. An attacker could convince a victim to open a malicious `.rdp` file, leading to a size-controlled double-free. This could potentially allow for arbitrary code execution on the affected system."], "mitigation": {"lang": "en:us", "value": "The vulnerability is triggered by opening a malicious `.rdp` file. Users should exercise caution and avoid opening `.rdp` files from untrusted sources."}, "name": "CVE-2026-64621", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-07-20T12:04:53Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64621\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64621\nhttps://github.com/FreeRDP/FreeRDP/commit/1f7a716d39b5605bb8a83b0c3c97a6ce386609ef\nhttps://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-f27x-frr8-j9hc\nhttps://www.vulncheck.com/advisories/freerdp-before-double-free-via-selectedmonitors"], "statement": "This Important flaw in FreeRDP clients allows for arbitrary code execution when a user opens a specially crafted `.rdp` connection file. The vulnerability stems from a double-free condition during the parsing of the `selectedmonitors` field, which can be triggered by an attacker convincing a victim to open a malicious file. This risk is elevated as it affects default configurations of FreeRDP command-line interface clients.", "threat_severity": "Important"}