{ "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-2026-19703", "tracking": { "current_release_date": "2026-11-09T09:53:38.563708Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-19703", "initial_release_date": "2026-11-06T18:22:48.348281Z", "revision_history": [ { "date": "2026-11-06T18:22:48.348281Z", "number": "1", "summary": "CVE created.| Source connected.| CVE status created. (valid)| Description created for source.| CVSS created.| CWES updated (1)." }, { "date": "2026-11-06T18:22:55.322165Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-11-06T19:34:58.485688Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| References created (1).| CWES updated (1)." }, { "date": "2026-11-06T19:35:03.295910Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-11-06T20:34:42.574279Z", "number": "5", "summary": "CVSS created." }, { "date": "2026-11-06T20:34:43.736194Z", "number": "6", "summary": "NCSC Score updated." }, { "date": "2026-11-06T20:55:49.090521Z", "number": "7", "summary": "CVSS created.| CWES created (1).| Unknown change.| Products created (2).| References created (1).| Description created for source.| Unknown change." }, { "date": "2026-11-06T20:55:50.467879Z", "number": "8", "summary": "NCSC Score updated." }, { "date": "2026-11-07T15:16:58.844161Z", "number": "9", "summary": "EPSS created.| Unknown change." }, { "date": "2026-11-07T15:18:09.388578Z", "number": "10", "summary": "NCSC Score updated." }, { "date": "2026-11-09T03:41:44.901174Z", "number": "11", "summary": "Source connected.| CVE status created. (valid)" }, { "date": "2026-11-09T09:53:18.476447Z", "number": "12", "summary": "Source created.| CVE status created. (valid)" } ], "status": "interim", "version": "12" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/7.3.3-7015andolderversions", "product": { "name": "vers:unknown/7.3.3-7015andolderversions", "product_id": "CSAFPID-8936551" } }, { "category": "product_version_range", "name": "vers:unknown/8.2.2-8015andolderversions", "product": { "name": "vers:unknown/8.2.2-8015andolderversions", "product_id": "CSAFPID-10049613" } } ], "category": "product_name", "name": "SonicOS" } ], "category": "vendor", "name": "SonicWall" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-19703", "cwe": { "id": "CWE-121", "name": "Stack-based Buffer Overflow" }, "notes": [ { "category": "description", "text": "1) CVE-2026-107155 - Permissive Cross-domain Policy Vulnerability\n\nA permissive cross-domain policy vulnerability has been identified in the SonicOS management interface, which in specific conditions could potentially enable a remote unauthenticated attacker to perform unauthorized operations.\n\nCVSS Score: 8.8 \nCVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H \nCWE-942: Permissive Cross-domain Security Policy with Untrusted Domains\n\n2) CVE-2026-107154 - Session Validation Vulnerability\n\nA session validation vulnerability has been identified in the SonicOS management interface, which in specific conditions could potentially enable a remote unauthenticated attacker to perform unauthorized operations.\n\nCVSS Score: 8.8 \nCVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H \nCWE-291: Reliance on IP Address for Authentication\n\n3) CVE-2026-82308 - Pre-authentication Heap Buffer Overflow Vulnerability in SSL-VPN\n\nA pre-authentication heap-based buffer overflow vulnerability has been identified in the SonicOS SSL-VPN service, which could potentially enable a remote unauthenticated attacker to cause an application level denial of service.\n\nCVSS Score: 7.5 \nCVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H \nCWE-122: Heap-based Buffer Overflow\n\n4) CVE-2026-19868 - SSLVPN Authentication Enforcement Vulnerability via Alternate Authentication Methods\n\nAn authentication enforcement vulnerability in SonicOS SSLVPN service may allow a user with valid credentials for an alternate authentication method to bypass SAML authentication controls. Successful exploitation may also bypass SAML-enforced multi-factor authentication (MFA).\n\nIMPORTANT: SonicWall PSIRT has investigated a report indicating potential exploitation of this vulnerability. Customers are strongly urged to upgrade to the latest release as soon as possible to mitigate the associated risks.\n\nNOTE: This vulnerability ONLY impacts the SonicOS SSLVPN interface or service if SAML is enabled for SSLVPN logins.\n\nCVSS Score: 7.1 \nCVSS Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N \nCWE-308: Use of Single-factor Authentication\n\n5) CVE-2026-77708 - Pre-authentication Stack Buffer Overflow Vulnerability in TACACS+\n\nA pre-authentication stack-based buffer overflow vulnerability has been identified in the SonicOS TACACS+ authentication client, which in specific conditions could potentially enable a remote unauthenticated attacker to cause an application level denial of service.\n\nCVSS Score: 5.9 \nCVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H \nCWE-121: Stack-based Buffer Overflow\n\n6) CVE-2026-77709 - Pre-authentication Heap Buffer Overflow Vulnerability in TACACS+\n\nA pre-authentication heap-based buffer overflow vulnerability has been identified in the SonicOS TACACS+ authentication client, which in specific conditions could potentially enable a remote unauthenticated attacker to cause an application level denial of service.\n\nCVSS Score: 5.9 \nCVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H \nCWE-122: Heap-based Buffer Overflow\n\n7) CVE-2026-19703 - Weak Password Hashing\n\nA weak password hashing vulnerability has been identified on SonicOS virtual appliances, which in specific conditions could potentially enable an attacker with existing local access to disclose a platform credential. The credential provides access to a limited subset of platform settings.\n\nCVSS Score: 5.2 \nCVSS Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N \nCWE-916: Use of Password Hash With Insufficient Computational Effort \nCWE-798: Use of Hard-coded Credentials", "title": "sonicwall - https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0014" }, { "category": "description", "text": "A weak password hashing vulnerability has been identified on SonicOS virtual appliances, which in specific conditions could potentially enable an attacker with existing local access to disclose a platform credential. The credential provides access to a limited subset of platform settings.", "title": "nvd - https://nvd.nist.gov/vuln/detail/CVE-2026-19703" }, { "category": "description", "text": "A weak password hashing vulnerability has been identified on SonicOS virtual appliances, which in specific conditions could potentially enable an attacker with existing local access to disclose a platform credential. The credential provides access to a limited subset of platform settings.", "title": "cveprojectv5 - https://www.cve.org/CVERecord?id=CVE-2026-19703" }, { "category": "other", "text": "0.00189", "title": "EPSS" }, { "category": "other", "text": "5.0", "title": "NCSC Score" }, { "category": "other", "text": "Is related to CWE-122 (Heap-based Buffer Overflow), Is related to an uncommon cvss source, Is related to an uncommon cwe id, There is cwe data available from source Sonicwall", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "Is related to (a version of) an uncommon product, The value of the most recent EPSS score, There is cwe data available from source Nvd", "title": "NCSC Score top decreasing factors" } ], "product_status": { "known_affected": [ "CSAFPID-8936551", "CSAFPID-10049613" ] }, "references": [ { "category": "external", "summary": "Source - ncscclear", "url": "https://vulnerabilities.ncsc.nl/manual/CVE-2026-19703" }, { "category": "external", "summary": "Source - nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-19703" }, { "category": "external", "summary": "Source - sonicwall", "url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0014" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://www.cve.org/CVERecord?id=CVE-2026-19703" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss" }, { "category": "external", "summary": "Source - hkcert", "url": "https://www.hkcert.org/security-bulletin/sonicwall-sonicos-sslvpn-security-restriction-bypass-vulnerability_20261109" }, { "category": "external", "summary": "Source - ncscclear", "url": "https://advisories.ncsc.nl/advisory?id=NCSC-2026-0471" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0014" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH" }, "products": [ "CSAFPID-10049613", "CSAFPID-8936551" ] } ], "title": "CVE-2026-19703" } ] }