{ "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-2026-4424", "tracking": { "current_release_date": "2026-03-26T03:58:47.400546Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-4424", "initial_release_date": "2026-03-19T22:10:32.474625Z", "revision_history": [ { "date": "2026-03-19T22:10:32.474625Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (3).| CWES updated (1)." }, { "date": "2026-03-19T22:10:34.364793Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-20T03:47:54.040608Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (3).| CWES updated (1)." }, { "date": "2026-03-20T03:47:58.085992Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-03-20T15:22:39.385520Z", "number": "5", "summary": "Unknown change." }, { "date": "2026-03-20T18:23:07.247243Z", "number": "6", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (12).| Product Identifiers created (6).| Product Remediations created (12).| References created (3).| CWES updated (1).| Vendor_assessment created." }, { "date": "2026-03-20T18:23:16.058946Z", "number": "7", "summary": "NCSC Score updated." }, { "date": "2026-03-20T18:24:25.229509Z", "number": "8", "summary": "Source created.| CVE status created. (valid)| Products connected (2)." }, { "date": "2026-03-20T18:24:27.544658Z", "number": "9", "summary": "NCSC Score updated." }, { "date": "2026-03-20T18:29:02.267386Z", "number": "10", "summary": "Description created for source." }, { "date": "2026-03-20T19:49:25.299421Z", "number": "11", "summary": "Source created.| CVE status created. (valid)| Products created (1).| Product Identifiers created (1).| References created (4)." }, { "date": "2026-03-20T19:49:27.611093Z", "number": "12", "summary": "NCSC Score updated." }, { "date": "2026-03-20T21:56:42.023023Z", "number": "13", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-25T12:20:00.684080Z", "number": "14", "summary": "Source connected.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (2).| CWES updated (1)." } ], "status": "interim", "version": "14" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-5875727", "product_identification_helper": { "cpe": "cpe:/a:libarchive:libarchive:-" } } } ], "category": "product_name", "name": "Open Source libarchive" } ], "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": [ { "category": "product_version_range", "name": "vers:rpm/4", "product": { "name": "vers:rpm/4", "product_id": "CSAFPID-1439328", "product_identification_helper": { "cpe": "cpe:/a:redhat:openshift:4" } } } ], "category": "product_name", "name": "Red Hat OpenShift Container Platform 4" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-5170309" } } ], "category": "product_name", "name": "libarchive" } ], "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-2159482" } } ], "category": "product_name", "name": "libarchive" } ], "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-2159483" } } ], "category": "product_name", "name": "libarchive" } ], "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-2159484" } } ], "category": "product_name", "name": "libarchive" } ], "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-2159485" } } ], "category": "product_name", "name": "libarchive" } ], "category": "product_family", "name": "Red Hat Enterprise Linux 9" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-1439329" } } ], "category": "product_name", "name": "rhcos" } ], "category": "product_family", "name": "Red Hat OpenShift Container Platform 4" } ], "category": "vendor", "name": "Red Hat" }, { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/*", "product": { "name": "vers:microsoft/*", "product_id": "CSAFPID-5874045", "product_identification_helper": { "cpe": "cpe:2.3:a:microsoft:azl3_libarchive_3.7.7-4:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "azl3 libarchive 3.7.7-4 on Azure Linux 3.0" }, { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/*", "product": { "name": "vers:microsoft/*", "product_id": "CSAFPID-5874044", "product_identification_helper": { "cpe": "cpe:2.3:a:microsoft:cbl2_libarchive_3.6.1-8:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "cbl2 libarchive 3.6.1-8 on CBL Mariner 2.0" } ], "category": "product_family", "name": "Open Source Software" } ], "category": "vendor", "name": "Microsoft" }, { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:deb/unknown", "product": { "name": "vers:deb/unknown", "product_id": "CSAFPID-2133934" } } ], "category": "product_name", "name": "libarchive" } ], "category": "product_family", "name": "bookworm" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:deb/unknown", "product": { "name": "vers:deb/unknown", "product_id": "CSAFPID-2133935" } } ], "category": "product_name", "name": "libarchive" } ], "category": "product_family", "name": "bullseye" } ], "category": "vendor", "name": "Debian" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-4424", "cwe": { "id": "CWE-125", "name": "Out-of-bounds Read" }, "notes": [ { "category": "description", "text": "A flaw was found in libarchive. This heap out-of-bounds read vulnerability exists in the RAR archive processing logic due to improper validation of the LZSS sliding window size after transitions between compression methods. A remote attacker can exploit this by providing a specially crafted RAR archive, leading to the disclosure of sensitive heap memory information without requiring authentication or user interaction.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/4xxx/CVE-2026-4424.json" }, { "category": "description", "text": "A flaw was found in libarchive. This heap out-of-bounds read vulnerability exists in the RAR archive processing logic due to improper validation of the LZSS sliding window size after transitions between compression methods. A remote attacker can exploit this by providing a specially crafted RAR archive, leading to the disclosure of sensitive heap memory information without requiring authentication or user interaction.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-4424" }, { "category": "description", "text": "A flaw was found in libarchive. This heap out-of-bounds read vulnerability exists in the RAR archive processing logic due to improper validation of the LZSS sliding window size after transitions between compression methods. A remote attacker can exploit this by providing a specially crafted RAR archive, leading to the disclosure of sensitive heap memory information without requiring authentication or user interaction.\nIMPORTANT: This heap out-of-bounds read vulnerability in libarchive's RAR archive processing logic can lead to information disclosure. A remote attacker can exploit this flaw by providing a specially crafted RAR archive, potentially revealing sensitive heap memory information without requiring authentication or user interaction on systems that process untrusted archives.", "title": "redhat - https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-4424.json" }, { "category": "description", "text": "A flaw was found in libarchive. This heap out-of-bounds read vulnerability exists in the RAR archive processing logic due to improper validation of the LZSS sliding window size after transitions between compression methods. A remote attacker can exploit this by providing a specially crafted RAR archive, leading to the disclosure of sensitive heap memory information without requiring authentication or user interaction.", "title": "debian - https://security-tracker.debian.org/tracker/CVE-2026-4424" }, { "category": "description", "text": "Libarchive: libarchive: information disclosure via heap out-of-bounds read in rar archive processing", "title": "microsoft - https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Mar" }, { "category": "other", "text": "0.00145", "title": "EPSS" }, { "category": "other", "text": "3.8", "title": "NCSC Score" }, { "category": "other", "text": "There is product data available from source Certbundde", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "There is product data available from source Debian, Is related to a product by vendor Debian, There is product_remediation data available from source Redhat, There is cwe data available from source Nvd", "title": "NCSC Score top decreasing factors" }, { "category": "details", "text": "Severity: 3\n", "title": "Vendor assessment" } ], "product_status": { "known_affected": [ "CSAFPID-1439315", "CSAFPID-1439317", "CSAFPID-1439319", "CSAFPID-1439321", "CSAFPID-1439328", "CSAFPID-1439329", "CSAFPID-2159482", "CSAFPID-2159483", "CSAFPID-2159484", "CSAFPID-2159485", "CSAFPID-2858634", "CSAFPID-5170309", "CSAFPID-2133934", "CSAFPID-2133935", "CSAFPID-5875727", "CSAFPID-5874044", "CSAFPID-5874045" ] }, "references": [ { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/4xxx/CVE-2026-4424.json" }, { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-4424" }, { "category": "external", "summary": "Source - redhat", "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-4424.json" }, { "category": "external", "summary": "Source - debian", "url": "https://security-tracker.debian.org/tracker/CVE-2026-4424" }, { "category": "external", "summary": "Source - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0803.json" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - microsoft", "url": "https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Mar" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://access.redhat.com/security/cve/CVE-2026-4424" }, { "category": "external", "summary": "Reference - certbundde; cveprojectv5; nvd", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2449006" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd; redhat", "url": "https://github.com/libarchive/libarchive/pull/2898" }, { "category": "external", "summary": "Reference - redhat", "url": "https://www.cve.org/CVERecord?id=CVE-2026-4424" }, { "category": "external", "summary": "Reference - redhat", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4424" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0803.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0803" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2449010" } ], "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-1439328", "CSAFPID-1439329", "CSAFPID-2159482", "CSAFPID-2159483", "CSAFPID-2159484", "CSAFPID-2159485", "CSAFPID-2858634", "CSAFPID-5170309" ] } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "baseScore": 7.5, "baseSeverity": "HIGH" }, "products": [ "CSAFPID-1439315", "CSAFPID-1439317", "CSAFPID-1439319", "CSAFPID-1439321", "CSAFPID-1439328", "CSAFPID-1439329", "CSAFPID-2133934", "CSAFPID-2133935", "CSAFPID-2159482", "CSAFPID-2159483", "CSAFPID-2159484", "CSAFPID-2159485", "CSAFPID-2858634", "CSAFPID-5170309", "CSAFPID-5874044", "CSAFPID-5874045", "CSAFPID-5875727" ] } ], "title": "CVE-2026-4424" } ] }