{ "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-2026-33987", "tracking": { "current_release_date": "2026-04-01T22:59:29.878820Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-33987", "initial_release_date": "2026-03-26T12:43:20.029139Z", "revision_history": [ { "date": "2026-03-26T12:43:20.029139Z", "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": "2026-03-26T13:06:15.476082Z", "number": "3", "summary": "Source connected.| CVE status created. (valid)| Products connected (2).| References created (15)." }, { "date": "2026-03-26T13:06:17.846277Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-03-30T22:25:10.478353Z", "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": "2026-03-30T22:38:44.882553Z", "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": "2026-03-30T22:38:46.246281Z", "number": "8", "summary": "NCSC Score updated." }, { "date": "2026-03-31T06:43:23.213998Z", "number": "9", "summary": "Description created for source." }, { "date": "2026-03-31T16:39:12.215884Z", "number": "10", "summary": "Unknown change." }, { "date": "2026-03-31T16:55:49.197615Z", "number": "11", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-31T16:56:01.285952Z", "number": "12", "summary": "NCSC Score updated." }, { "date": "2026-04-01T12:39:48.019336Z", "number": "13", "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": "2026-04-01T12:39:51.391793Z", "number": "14", "summary": "NCSC Score updated." }, { "date": "2026-04-01T22:59:26.977189Z", "number": "15", "summary": "Products connected (1).| Product Identifiers created (1)." }, { "date": "2026-04-01T22:59:28.558934Z", "number": "16", "summary": "NCSC Score updated." } ], "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:/a: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-2026-33987", "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 persistent_cache_read_entry_v3() in libfreerdp/cache/persistent.c, persistent->bmpSize is updated before winpr_aligned_recalloc(). If realloc fails, bmpSize is inflated while bmpData points to the old buffer. This issue has been patched in version 3.24.2.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33987" }, { "category": "description", "text": "FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in persistent_cache_read_entry_v3() in libfreerdp/cache/persistent.c, persistent->bmpSize is updated before winpr_aligned_recalloc(). If realloc fails, bmpSize is inflated while bmpData points to the old buffer. This issue has been patched in version 3.24.2.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33987.json" }, { "category": "description", "text": "FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in persistent_cache_read_entry_v3() in libfreerdp/cache/persistent.c, persistent->bmpSize is updated before winpr_aligned_recalloc(). If realloc fails, bmpSize is inflated while bmpData points to the old buffer. This issue has been patched in version 3.24.2.", "title": "debian - https://security-tracker.debian.org/tracker/CVE-2026-33987" }, { "category": "description", "text": "A flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol. A memory corruption vulnerability exists in the persistent cache handling. If a memory reallocation fails, an internal size variable is incorrectly updated, while the data pointer still refers to the original, smaller memory block. This can allow a local attacker, through user interaction, to cause a denial of service or potentially execute arbitrary code.", "title": "redhat - https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-33987.json" }, { "category": "other", "text": "0.00013", "title": "EPSS" }, { "category": "other", "text": "4.3", "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, The value of the most recent EPSS score, Is related to a product by vendor Open Source", "title": "NCSC Score top decreasing factors" }, { "category": "details", "text": "Severity: 2\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-2026-33987" }, { "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-2026-33987" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33987.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-2026-33987.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; cveprojectv5; nvd; redhat", "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/1a890eb43492b5eb707cb3dd6fc908f696e8fc1c" }, { "category": "external", "summary": "Reference - redhat", "url": "https://www.cve.org/CVERecord?id=CVE-2026-33987" }, { "category": "external", "summary": "Reference - redhat", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33987" } ], "remediations": [ { "category": "mitigation", "details": "To mitigate this issue, avoid connecting to untrusted Remote Desktop Protocol (RDP) servers or opening untrusted RDP files. Users can also disable persistent caching in FreeRDP by using the `--disable-persistent-caching` command-line option when launching `xfreerdp` or similar FreeRDP clients. This may impact performance for frequently accessed RDP sessions.", "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:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "baseScore": 7.8, "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-2026-33987" } ] }