{ "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-2026-0400", "tracking": { "current_release_date": "2026-04-01T17:36:15.218735Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-0400", "initial_release_date": "2026-02-24T12:22:39.140713Z", "revision_history": [ { "date": "2026-02-24T12:22:39.140713Z", "number": "1", "summary": "CVE created.| Source connected.| CVE status created. (valid)| Description created for source.| CVSS created.| CWES updated (1)." }, { "date": "2026-02-24T12:22:41.819270Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-02-24T13:06:41.268901Z", "number": "3", "summary": "Source connected.| CVE status created. (valid)| Products connected (2).| References created (3)." }, { "date": "2026-02-24T13:06:49.786607Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-02-24T15:27:04.136628Z", "number": "5", "summary": "Source created.| CVE status created. (valid)| Description created for source.| References created (1).| CWES updated (1)." }, { "date": "2026-02-24T15:27:06.998570Z", "number": "6", "summary": "NCSC Score updated." }, { "date": "2026-02-24T15:38:34.791387Z", "number": "7", "summary": "Source created.| CVE status created. (valid)| Description created for source.| Products connected (3).| References created (1).| CWES updated (1)." }, { "date": "2026-02-24T15:38:40.458924Z", "number": "8", "summary": "NCSC Score updated." }, { "date": "2026-02-24T16:25:38.178162Z", "number": "9", "summary": "CVSS created." }, { "date": "2026-02-24T16:25:46.836941Z", "number": "10", "summary": "NCSC Score updated." }, { "date": "2026-02-24T17:01:57.245521Z", "number": "11", "summary": "CVSS created.| Unknown change." }, { "date": "2026-02-24T17:02:11.009978Z", "number": "12", "summary": "NCSC Score updated." }, { "date": "2026-02-25T15:15:41.472205Z", "number": "13", "summary": "Source created.| CVE status created. (valid)| EPSS created." }, { "date": "2026-02-25T15:15:42.823334Z", "number": "14", "summary": "NCSC Score updated." }, { "date": "2026-02-26T21:26:01.702282Z", "number": "15", "summary": "Products connected (2).| Product Identifiers created (2)." }, { "date": "2026-02-26T21:26:05.998041Z", "number": "16", "summary": "NCSC Score updated." }, { "date": "2026-03-04T12:22:36.864878Z", "number": "17", "summary": "Description removed for source.| Description created for source." }, { "date": "2026-03-04T12:22:39.121081Z", "number": "18", "summary": "NCSC Score updated." }, { "date": "2026-03-20T10:16:27.501268Z", "number": "19", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-20T10:16:31.894982Z", "number": "20", "summary": "NCSC Score updated." }, { "date": "2026-04-01T17:36:11.585961Z", "number": "21", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-04-01T17:36:14.463383Z", "number": "22", "summary": "NCSC Score updated." } ], "status": "interim", "version": "22" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/7.0.1-5169andolderversions", "product": { "name": "vers:unknown/7.0.1-5169andolderversions", "product_id": "CSAFPID-5687770" } }, { "category": "product_version_range", "name": "vers:unknown/7.3.1-7013andolderversions", "product": { "name": "vers:unknown/7.3.1-7013andolderversions", "product_id": "CSAFPID-5687771" } }, { "category": "product_version_range", "name": "vers:unknown/8.1.0-8017andolderversions", "product": { "name": "vers:unknown/8.1.0-8017andolderversions", "product_id": "CSAFPID-5687772" } }, { "category": "product_version_range", "name": "vers:unknown/gen 7 <7.3.2-7010", "product": { "name": "vers:unknown/gen 7 <7.3.2-7010", "product_id": "CSAFPID-5687412" } }, { "category": "product_version_range", "name": "vers:unknown/gen 8 <8.2.0-8009", "product": { "name": "vers:unknown/gen 8 <8.2.0-8009", "product_id": "CSAFPID-5687413" } } ], "category": "product_name", "name": "SonicOS" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<7.3.2-7010", "product": { "name": "vers:unknown/<7.3.2-7010", "product_id": "CSAFPID-5732268", "product_identification_helper": { "cpe": "cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/<8.2.0-8009", "product": { "name": "vers:unknown/<8.2.0-8009", "product_id": "CSAFPID-5732269", "product_identification_helper": { "cpe": "cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "sonicos" } ], "category": "vendor", "name": "SonicWall" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-0400", "cwe": { "id": "CWE-121", "name": "Stack-based Buffer Overflow" }, "notes": [ { "category": "description", "text": "A post-authentication Format String vulnerability in SonicOS allows a remote attacker to crash a firewall.", "title": "nvd - https://nvd.nist.gov/vuln/detail/CVE-2026-0400" }, { "category": "description", "text": "A post-authentication Format String vulnerability in SonicOS allows a remote attacker to crash a firewall.", "title": "cveprojectv5 - https://www.cve.org/CVERecord?id=CVE-2026-0400" }, { "category": "description", "text": "1) CVE-2026-0399 - Multiple SonicOS post-authentication Stack-based Buffer Overflow vulnerabilities \n \nMultiple post-authentication Stack-based Buffer Overflow vulnerabilities in SonicOS allows a remote attacker to crash a firewall.\n\nCVSS Score: 4.9 \nCVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H \nCWE-121: Stack-based Buffer Overflow \n \n2) CVE-2026-0400 - SonicOS post-authentication Format String vulnerability \n \nA post-authentication Format String vulnerability in SonicOS allows a remote attacker to crash a firewall.\n\nCVSS Score: 4.9 \nCVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H \nCWE-134: Use of Externally-Controlled Format String\n \n \n3) CVE-2026-0401 - SonicOS post-authentication NULL Pointer Dereference vulnerability \n \nA post-authentication NULL Pointer Dereference vulnerability in SonicOS allows a remote attacker to crash a firewall.\n\nCVSS Score: 4.9 \nCVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H \nCWE-476: NULL Pointer Dereference  \n \n4) CVE-2026-0402 - SonicOS post-authentication Out-of-bounds Read vulnerability \n \nA post-authentication Out-of-bounds Read vulnerability in SonicOS allows a remote attacker to crash a firewall.\n\nCVSS Score: 4.9 \nCVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H \nCWE-125: Out-of-bounds Read  \n \n5) CVE-2026-3439 - SonicOS post-authentication Stack-based Buffer Overflow in certificate handling \n \nA post-authentication Stack-based Buffer Overflow vulnerability in SonicOS certificate handling allows a remote attacker to crash a firewall.\n\nCVSS Score: 4.9 \nCVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H \nCWE-121: Stack-based Buffer Overflow", "title": "sonicwall - https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0001" }, { "category": "other", "text": "0.00216", "title": "EPSS" }, { "category": "other", "text": "6.1", "title": "NCSC Score" }, { "category": "other", "text": "There is cwe data available from source Sonicwall, Is related to an uncommon cvss source, Is related to an uncommon product vendor, 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, Is related to CWE-125 (Out-of-bounds Read)", "title": "NCSC Score top decreasing factors" } ], "product_status": { "known_affected": [ "CSAFPID-5687412", "CSAFPID-5687413", "CSAFPID-5687770", "CSAFPID-5687771", "CSAFPID-5687772", "CSAFPID-5732268", "CSAFPID-5732269" ] }, "references": [ { "category": "external", "summary": "Source - sonicwall", "url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0001" }, { "category": "external", "summary": "Source raw - sonicwall", "url": "https://psirtapi.global.sonicwall.com/api/v1/vulndetail/?advisory_id=SNWLID-2026-0001" }, { "category": "external", "summary": "Source - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0495.json" }, { "category": "external", "summary": "Source - nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-0400" }, { "category": "external", "summary": "Source raw - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-0400" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://www.cve.org/CVERecord?id=CVE-2026-0400" }, { "category": "external", "summary": "Source raw - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/0xxx/CVE-2026-0400.json" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-0400" }, { "category": "external", "summary": "Source raw - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=10000" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0495.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0495" }, { "category": "external", "summary": "Reference - certbundde; cveprojectv5; nvd", "url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0001" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "baseScore": 4.9, "baseSeverity": "MEDIUM" }, "products": [ "CSAFPID-5687412", "CSAFPID-5687413", "CSAFPID-5687770", "CSAFPID-5687771", "CSAFPID-5687772", "CSAFPID-5732268", "CSAFPID-5732269" ] } ], "title": "CVE-2026-0400" } ] }