{ "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-2026-33243", "tracking": { "current_release_date": "2026-03-26T21:30:23.100623Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-33243", "initial_release_date": "2026-03-20T23:25:58.921111Z", "revision_history": [ { "date": "2026-03-20T23:25:58.921111Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)." }, { "date": "2026-03-20T23:26:09.506727Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-20T23:38:57.753897Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (2).| References created (2).| CWES updated (1)." }, { "date": "2026-03-20T23:39:01.841653Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-03-21T15:23:05.231932Z", "number": "5", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-24T20:51:12.230939Z", "number": "6", "summary": "Unknown change." }, { "date": "2026-03-25T20:54:01.775622Z", "number": "7", "summary": "Products created (6).| Product Identifiers created (6)." }, { "date": "2026-03-25T20:54:03.768955Z", "number": "8", "summary": "NCSC Score updated." }, { "date": "2026-03-26T20:39:21.927503Z", "number": "9", "summary": "Description removed for source.| Description created for source." }, { "date": "2026-03-26T21:24:56.709882Z", "number": "10", "summary": "Description removed for source.| Description created for source." } ], "status": "interim", "version": "10" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/>=2016.03.0|<2025.09.3", "product": { "name": "vers:unknown/>=2016.03.0|<2025.09.3", "product_id": "CSAFPID-5909700", "product_identification_helper": { "cpe": "cpe:2.3:a:pengutronix:barebox:*:*:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/>=2025.10.0|<2026.03.1", "product": { "name": "vers:unknown/>=2025.10.0|<2026.03.1", "product_id": "CSAFPID-5909701", "product_identification_helper": { "cpe": "cpe:2.3:a:pengutronix:barebox:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "Barebox" } ], "category": "vendor", "name": "Pengutronix" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/2026.04-rc1", "product": { "name": "vers:unknown/2026.04-rc1", "product_id": "CSAFPID-5909697", "product_identification_helper": { "cpe": "cpe:2.3:a:denx:u-boot:2026.04:rc1:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/2026.04-rc2", "product": { "name": "vers:unknown/2026.04-rc2", "product_id": "CSAFPID-5909698", "product_identification_helper": { "cpe": "cpe:2.3:a:denx:u-boot:2026.04:rc2:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/2026.04-rc3", "product": { "name": "vers:unknown/2026.04-rc3", "product_id": "CSAFPID-5909699", "product_identification_helper": { "cpe": "cpe:2.3:a:denx:u-boot:2026.04:rc3:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/>=2013.07|<2026.04", "product": { "name": "vers:unknown/>=2013.07|<2026.04", "product_id": "CSAFPID-5909696", "product_identification_helper": { "cpe": "cpe:2.3:a:denx:u-boot:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "U-boot" } ], "category": "vendor", "name": "Denx" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/>=2016.03.0|<2025.09.3", "product": { "name": "vers:unknown/>=2016.03.0|<2025.09.3", "product_id": "CSAFPID-5878161" } }, { "category": "product_version_range", "name": "vers:unknown/>=2025.10.0|<2026.03.1", "product": { "name": "vers:unknown/>=2025.10.0|<2026.03.1", "product_id": "CSAFPID-5878162" } } ], "category": "product_name", "name": "barebox" } ], "category": "vendor", "name": "barebox" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-33243", "notes": [ { "category": "description", "text": "barebox is a bootloader. In barebox from version 2016.03.0 to before version 2026.03.1 (and the corresponding backport to 2025.09.3), an attacker could exploit a FIT signature verification vulnerability to trick the bootloader into booting different images than those that were verified as part of a signed configuration. mkimage(1) sets the hashed-nodes property of the FIT signature node to list which nodes of the FIT were hashed as part of the signing process as these will need to be verified later on by the bootloader. However, hashed-nodes itself is not part of the hash and could therefore be modified to allow booting different images than those that have been verified. This issue has been patched in barebox versions 2026.03.1 and backported to 2025.09.3.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33243.json" }, { "category": "description", "text": "barebox is a bootloader. In barebox from version 2016.03.0 to before version 2026.03.1 (and the corresponding backport to 2025.09.3), an attacker could exploit a FIT signature verification vulnerability to trick the bootloader into booting different images than those that were verified as part of a signed configuration. mkimage(1) sets the hashed-nodes property of the FIT signature node to list which nodes of the FIT were hashed as part of the signing process as these will need to be verified later on by the bootloader. However, hashed-nodes itself is not part of the hash and could therefore be modified to allow booting different images than those that have been verified. This issue has been patched in barebox versions 2026.03.1 and backported to 2025.09.3.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33243" }, { "category": "other", "text": "6e-05", "title": "EPSS" }, { "category": "other", "text": "4.4", "title": "NCSC Score" }, { "category": "other", "text": "Is related to an uncommon product vendor", "title": "NCSC Score top decreasing factors" } ], "product_status": { "known_affected": [ "CSAFPID-5878161", "CSAFPID-5878162", "CSAFPID-5909696", "CSAFPID-5909697", "CSAFPID-5909698", "CSAFPID-5909699", "CSAFPID-5909700", "CSAFPID-5909701" ] }, "references": [ { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33243" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33243.json" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://github.com/barebox/barebox/commit/aca01795056d51060cb096f9a1ea309361743e05" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://github.com/barebox/barebox/security/advisories/GHSA-3fvj-q26p-j6h4" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H", "baseScore": 8.2, "baseSeverity": "HIGH" }, "products": [ "CSAFPID-5878161", "CSAFPID-5878162", "CSAFPID-5909696", "CSAFPID-5909697", "CSAFPID-5909698", "CSAFPID-5909699", "CSAFPID-5909700", "CSAFPID-5909701" ] } ], "title": "CVE-2026-33243" } ] }