{ "document": { "category": "csaf_base", "csaf_version": "2.0", "distribution": { "tlp": { "label": "WHITE" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings." } ], "publisher": { "category": "coordinator", "contact_details": "cert@ncsc.nl", "name": "National Cyber Security Centre", "namespace": "https://www.ncsc.nl/" }, "title": "CVE-2026-33984", "tracking": { "current_release_date": "2026-04-02T04:39:18.757640Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-33984", "initial_release_date": "2026-03-26T12:43:18.993478Z", "revision_history": [ { "date": "2026-03-26T12:43:18.993478Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Products connected (2)." }, { "date": "2026-03-26T12:43:20.716392Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-26T13:06:14.324750Z", "number": "3", "summary": "Source connected.| CVE status created. (valid)| Products connected (2).| References created (15)." }, { "date": "2026-03-26T13:06:16.659195Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-03-30T22:24:56.904880Z", "number": "5", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)." }, { "date": "2026-03-30T22:25:00.668409Z", "number": "6", "summary": "NCSC Score updated." }, { "date": "2026-03-30T22:38:42.940191Z", "number": "7", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (1).| References created (2).| CWES updated (1)." }, { "date": "2026-03-30T22:38:45.184946Z", "number": "8", "summary": "NCSC Score updated." }, { "date": "2026-03-31T06:43:25.772983Z", "number": "9", "summary": "Description created for source." }, { "date": "2026-03-31T16:55:50.301437Z", "number": "10", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-31T16:56:01.285952Z", "number": "11", "summary": "NCSC Score updated." }, { "date": "2026-04-01T00:28:16.789363Z", "number": "12", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (10).| Product Identifiers created (5).| Product Remediations created (10).| References created (4).| CWES updated (1).| Vendor_assessment created." }, { "date": "2026-04-01T00:28:28.968937Z", "number": "13", "summary": "NCSC Score updated." }, { "date": "2026-04-01T23:25:37.090246Z", "number": "14", "summary": "Products connected (1).| Product Identifiers created (1)." }, { "date": "2026-04-01T23:25:46.866336Z", "number": "15", "summary": "NCSC Score updated." }, { "date": "2026-04-02T04:38:40.958389Z", "number": "16", "summary": "Unknown change." } ], "status": "interim", "version": "16" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-1317178", "product_identification_helper": { "cpe": "cpe:/o:fedoraproject:fedora:-" } } } ], "category": "product_name", "name": "Fedora Linux" } ], "category": "vendor", "name": "Fedora" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<3.24.2", "product": { "name": "vers:unknown/<3.24.2", "product_id": "CSAFPID-5965640", "product_identification_helper": { "cpe": "cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "FreeRDP" } ], "category": "vendor", "name": "FreeRDP" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<3.24.2", "product": { "name": "vers:unknown/<3.24.2", "product_id": "CSAFPID-5917551" } } ], "category": "product_name", "name": "FreeRDP" } ], "category": "vendor", "name": "Open Source" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/10", "product": { "name": "vers:rpm/10", "product_id": "CSAFPID-2858634", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:10" } } } ], "category": "product_name", "name": "Red Hat Enterprise Linux 10" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/6", "product": { "name": "vers:rpm/6", "product_id": "CSAFPID-1439321", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:6" } } } ], "category": "product_name", "name": "Red Hat Enterprise Linux 6" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/7", "product": { "name": "vers:rpm/7", "product_id": "CSAFPID-1439315", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:7" } } } ], "category": "product_name", "name": "Red Hat Enterprise Linux 7" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/8", "product": { "name": "vers:rpm/8", "product_id": "CSAFPID-1439317", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:8" } } } ], "category": "product_name", "name": "Red Hat Enterprise Linux 8" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/9", "product": { "name": "vers:rpm/9", "product_id": "CSAFPID-1439319", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:9" } } } ], "category": "product_name", "name": "Red Hat Enterprise Linux 9" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-5434090" } } ], "category": "product_name", "name": "freerdp" } ], "category": "product_family", "name": "Red Hat Enterprise Linux 10" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-5434092" } } ], "category": "product_name", "name": "freerdp" } ], "category": "product_family", "name": "Red Hat Enterprise Linux 6" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-5434096" } } ], "category": "product_name", "name": "freerdp" } ], "category": "product_family", "name": "Red Hat Enterprise Linux 7" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-5434101" } } ], "category": "product_name", "name": "freerdp" } ], "category": "product_family", "name": "Red Hat Enterprise Linux 8" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-5434103" } } ], "category": "product_name", "name": "freerdp" } ], "category": "product_family", "name": "Red Hat Enterprise Linux 9" } ], "category": "vendor", "name": "Red Hat" }, { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:deb/unknown", "product": { "name": "vers:deb/unknown", "product_id": "CSAFPID-1399759" } } ], "category": "product_name", "name": "freerdp2" } ], "category": "product_family", "name": "bookworm" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:deb/unknown", "product": { "name": "vers:deb/unknown", "product_id": "CSAFPID-1399760" } } ], "category": "product_name", "name": "freerdp2" } ], "category": "product_family", "name": "bullseye" } ], "category": "vendor", "name": "Debian" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-33984", "cwe": { "id": "CWE-122", "name": "Heap-based Buffer Overflow" }, "notes": [ { "category": "description", "text": "FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in resize_vbar_entry() in libfreerdp/codec/clear.c, vBarEntry->size is updated to vBarEntry->count before the winpr_aligned_recalloc() call. If realloc fails, size is inflated while pixels still points to the old, smaller buffer. On a subsequent call where count <= size (the inflated value), realloc is skipped. The caller then writes count * bpp bytes of attacker-controlled pixel data into the undersized buffer, causing a heap buffer overflow. This issue has been patched in version 3.24.2.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33984" }, { "category": "description", "text": "FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in resize_vbar_entry() in libfreerdp/codec/clear.c, vBarEntry->size is updated to vBarEntry->count before the winpr_aligned_recalloc() call. If realloc fails, size is inflated while pixels still points to the old, smaller buffer. On a subsequent call where count <= size (the inflated value), realloc is skipped. The caller then writes count * bpp bytes of attacker-controlled pixel data into the undersized buffer, causing a heap buffer overflow. This issue has been patched in version 3.24.2.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33984.json" }, { "category": "description", "text": "FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in resize_vbar_entry() in libfreerdp/codec/clear.c, vBarEntry->size is updated to vBarEntry->count before the winpr_aligned_recalloc() call. If realloc fails, size is inflated while pixels still points to the old, smaller buffer. On a subsequent call where count <= size (the inflated value), realloc is skipped. The caller then writes count * bpp bytes of attacker-controlled pixel data into the undersized buffer, causing a heap buffer overflow. This issue has been patched in version 3.24.2.", "title": "debian - https://security-tracker.debian.org/tracker/CVE-2026-33984" }, { "category": "description", "text": "FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in resize_vbar_entry() in libfreerdp/codec/clear.c, vBarEntry->size is updated to vBarEntry->count before the winpr_aligned_recalloc() call. If realloc fails, size is inflated while pixels still points to the old, smaller buffer. On a subsequent call where count <= size (the inflated value), realloc is skipped. The caller then writes count * bpp bytes of attacker-controlled pixel data into the undersized buffer, causing a heap buffer overflow. This issue has been patched in version 3.24.2.\nA flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol. A remote attacker could exploit a heap buffer overflow vulnerability in the `resize_vbar_entry()` function. This occurs when an error in buffer resizing leads to attacker-controlled pixel data being written into an undersized memory buffer. Successful exploitation could result in arbitrary code execution.", "title": "redhat - https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-33984.json" }, { "category": "other", "text": "0.00039", "title": "EPSS" }, { "category": "other", "text": "4.5", "title": "NCSC Score" }, { "category": "other", "text": "There is product data available from source Certbundde", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "Is related to (a version of) an uncommon product, There is product data available from source Debian, Is related to a product by vendor Debian, Is related to a product by vendor Open Source", "title": "NCSC Score top decreasing factors" }, { "category": "details", "text": "Severity: 3\n", "title": "Vendor assessment" } ], "product_status": { "known_affected": [ "CSAFPID-1399759", "CSAFPID-1399760", "CSAFPID-1317178", "CSAFPID-5917551", "CSAFPID-5965640", "CSAFPID-1439315", "CSAFPID-1439317", "CSAFPID-1439319", "CSAFPID-1439321", "CSAFPID-2858634", "CSAFPID-5434090", "CSAFPID-5434092", "CSAFPID-5434096", "CSAFPID-5434101", "CSAFPID-5434103" ] }, "references": [ { "category": "external", "summary": "Source - debian", "url": "https://security-tracker.debian.org/tracker/CVE-2026-33984" }, { "category": "external", "summary": "Source - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0880.json" }, { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33984" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33984.json" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - redhat", "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-33984.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0880.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0880" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://www.freerdp.com/2026/03/25/3_24_2-release" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4gfm-4p52-h478" }, { "category": "external", "summary": "Reference - certbundde; cveprojectv5; nvd; redhat", "url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-8469-2xcx-frf6" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-8jm9-2925-g4v2" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-ff8h-p5vc-wcwc" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-h6qw-wxvm-hf97" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-x6gr-8p7h-5h85" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4v4p-9v5x-hc93" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-8f2g-3q27-6xm5" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-mv25-f4p2-5mxx" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-07418a381f" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-f6fe509803" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-36ea367760" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd; redhat", "url": "https://github.com/FreeRDP/FreeRDP/commit/dc7fdb165095139be779a4000199bc1706b06ad5" }, { "category": "external", "summary": "Reference - redhat", "url": "https://www.cve.org/CVERecord?id=CVE-2026-33984" }, { "category": "external", "summary": "Reference - redhat", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33984" } ], "remediations": [ { "category": "mitigation", "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.", "product_ids": [ "CSAFPID-1439315", "CSAFPID-1439317", "CSAFPID-1439319", "CSAFPID-1439321", "CSAFPID-2858634", "CSAFPID-5434090", "CSAFPID-5434092", "CSAFPID-5434096", "CSAFPID-5434101", "CSAFPID-5434103" ] } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "baseScore": 7.5, "baseSeverity": "HIGH" }, "products": [ "CSAFPID-1317178", "CSAFPID-1399759", "CSAFPID-1399760", "CSAFPID-1439315", "CSAFPID-1439317", "CSAFPID-1439319", "CSAFPID-1439321", "CSAFPID-2858634", "CSAFPID-5434090", "CSAFPID-5434092", "CSAFPID-5434096", "CSAFPID-5434101", "CSAFPID-5434103", "CSAFPID-5917551", "CSAFPID-5965640" ] } ], "title": "CVE-2026-33984" } ] }