{ "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-2026-33986", "tracking": { "current_release_date": "2026-04-01T23:26:11.272867Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-33986", "initial_release_date": "2026-03-26T12:43:19.451780Z", "revision_history": [ { "date": "2026-03-26T12:43:19.451780Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Products connected (2)." }, { "date": "2026-03-26T12:43:21.794997Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-26T13:06:15.135127Z", "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": "2026-03-30T22:25:11.152593Z", "number": "5", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)." }, { "date": "2026-03-30T22:25:13.175907Z", "number": "6", "summary": "NCSC Score updated." }, { "date": "2026-03-30T22:38:41.445686Z", "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": "2026-03-30T22:38:44.069306Z", "number": "8", "summary": "NCSC Score updated." }, { "date": "2026-03-31T06:43:24.012838Z", "number": "9", "summary": "Description created for source." }, { "date": "2026-03-31T14:39:06.601959Z", "number": "10", "summary": "Unknown change." }, { "date": "2026-03-31T14:39:10.439586Z", "number": "11", "summary": "NCSC Score updated." }, { "date": "2026-03-31T16:55:49.411750Z", "number": "12", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-31T16:56:01.285952Z", "number": "13", "summary": "NCSC Score updated." }, { "date": "2026-04-01T00:27:54.017561Z", "number": "14", "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": "2026-04-01T00:28:01.684669Z", "number": "15", "summary": "NCSC Score updated." }, { "date": "2026-04-01T23:25:41.110736Z", "number": "16", "summary": "Products connected (1).| Product Identifiers created (1)." }, { "date": "2026-04-01T23:25:46.866336Z", "number": "17", "summary": "NCSC Score updated." } ], "status": "interim", "version": "17" } }, "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-2026-33986", "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 yuv_ensure_buffer() in libfreerdp/codec/h264.c, h264->width and h264->height are updated before the reallocation loop. If any winpr_aligned_recalloc() call fails, the function returns FALSE but width/height are already inflated. This issue has been patched in version 3.24.2.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33986" }, { "category": "description", "text": "FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in yuv_ensure_buffer() in libfreerdp/codec/h264.c, h264->width and h264->height are updated before the reallocation loop. If any winpr_aligned_recalloc() call fails, the function returns FALSE but width/height are already inflated. This issue has been patched in version 3.24.2.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33986.json" }, { "category": "description", "text": "FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in yuv_ensure_buffer() in libfreerdp/codec/h264.c, h264->width and h264->height are updated before the reallocation loop. If any winpr_aligned_recalloc() call fails, the function returns FALSE but width/height are already inflated. This issue has been patched in version 3.24.2.", "title": "debian - https://security-tracker.debian.org/tracker/CVE-2026-33986" }, { "category": "description", "text": "FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in yuv_ensure_buffer() in libfreerdp/codec/h264.c, h264->width and h264->height are updated before the reallocation loop. If any winpr_aligned_recalloc() call fails, the function returns FALSE but width/height are already inflated. 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 memory allocation vulnerability in the H.264 codec by enticing a user to connect to a malicious server. This flaw occurs when internal buffer dimensions are incorrectly updated after a failed memory reallocation, potentially leading to a heap-based buffer overflow. Successful exploitation could result in arbitrary code execution or a denial of service (DoS), compromising the availability, integrity, and confidentiality of the affected system.", "title": "redhat - https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-33986.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-2026-33986" }, { "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-2026-33986" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33986.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-2026-33986.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", "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; cveprojectv5; nvd; redhat", "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/f6e43e208958140074ae9bb93cd0c9045a371c77" }, { "category": "external", "summary": "Reference - redhat", "url": "https://www.cve.org/CVERecord?id=CVE-2026-33986" }, { "category": "external", "summary": "Reference - redhat", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33986" } ], "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-2026-33986" } ] }