{ "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-2026-4046", "tracking": { "current_release_date": "2026-04-02T13:14:17.939716Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-4046", "initial_release_date": "2026-03-30T17:38:40.342580Z", "revision_history": [ { "date": "2026-03-30T17:38:40.342580Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| Products created (1).| References created (1).| CWES updated (1)." }, { "date": "2026-03-30T17:38:42.638761Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-30T18:26:31.961860Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)." }, { "date": "2026-03-30T18:26:33.644573Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-03-30T18:39:35.745024Z", "number": "5", "summary": "CVSS created.| References created (1).| Unknown change." }, { "date": "2026-03-30T18:39:39.262630Z", "number": "6", "summary": "NCSC Score updated." }, { "date": "2026-03-31T00:27:34.652728Z", "number": "7", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (14).| Product Identifiers created (6).| Product Remediations created (14).| References created (4).| CWES updated (1).| Vendor_assessment created." }, { "date": "2026-03-31T00:27:47.066545Z", "number": "8", "summary": "NCSC Score updated." }, { "date": "2026-03-31T00:43:11.586834Z", "number": "9", "summary": "Source created.| CVE status created. (valid)| Products connected (2)." }, { "date": "2026-03-31T00:43:19.084503Z", "number": "10", "summary": "NCSC Score updated." }, { "date": "2026-03-31T06:43:33.373047Z", "number": "11", "summary": "Description created for source." }, { "date": "2026-03-31T10:09:50.935636Z", "number": "12", "summary": "Source created.| CVE status created. (valid)| Products created (1).| References created (5)." }, { "date": "2026-03-31T10:09:58.708808Z", "number": "13", "summary": "NCSC Score updated." }, { "date": "2026-03-31T16:53:50.518051Z", "number": "14", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-31T16:53:53.797502Z", "number": "15", "summary": "NCSC Score updated." }, { "date": "2026-04-02T12:19:52.937357Z", "number": "16", "summary": "Source connected.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (1).| CWES updated (1)." } ], "status": "interim", "version": "16" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<=2.43", "product": { "name": "vers:unknown/<=2.43", "product_id": "CSAFPID-5968073" } } ], "category": "product_name", "name": "GNU libc" } ], "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:/o: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-1441502" } } ], "category": "product_name", "name": "compat-glibc" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-1441503" } } ], "category": "product_name", "name": "glibc" } ], "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-1441504" } } ], "category": "product_name", "name": "compat-glibc" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-1441505" } } ], "category": "product_name", "name": "glibc" } ], "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-2898794" } } ], "category": "product_name", "name": "glibc" } ], "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-1441506" } } ], "category": "product_name", "name": "glibc" } ], "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-1441507" } } ], "category": "product_name", "name": "glibc" } ], "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-5826718", "product_identification_helper": { "cpe": "cpe:2.3:a:microsoft:cbl2_glibc_2.35-10:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "cbl2 glibc 2.35-10 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-1398444" } } ], "category": "product_name", "name": "glibc" } ], "category": "product_family", "name": "bookworm" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:deb/unknown", "product": { "name": "vers:deb/unknown", "product_id": "CSAFPID-1398441" } } ], "category": "product_name", "name": "glibc" } ], "category": "product_family", "name": "bullseye" } ], "category": "vendor", "name": "Debian" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/2.3.3|<*", "product": { "name": "vers:unknown/2.3.3|<*", "product_id": "CSAFPID-5965491" } } ], "category": "product_name", "name": "glibc" } ], "category": "vendor", "name": "The GNU C Library" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-4046", "cwe": { "id": "CWE-617", "name": "Reachable Assertion" }, "notes": [ { "category": "description", "text": "The iconv() function in the GNU C Library versions 2.43 and earlier may crash due to an assertion failure when converting inputs from the IBM1390 or IBM1399 character sets, which may be used to remotely crash an application.\n\n\n\nThis vulnerability can be trivially mitigated by removing the IBM1390 and IBM1399 character sets from systems that do not need them.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/4xxx/CVE-2026-4046.json" }, { "category": "description", "text": "The iconv() function in the GNU C Library versions 2.43 and earlier may crash due to an assertion failure when converting inputs from the IBM1390 or IBM1399 character sets, which may be used to remotely crash an application.\n\n\n\nThis vulnerability can be trivially mitigated by removing the IBM1390 and IBM1399 character sets from systems that do not need them.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-4046" }, { "category": "description", "text": "A flaw was found in glibc, the GNU C Library. A remote attacker could exploit this vulnerability by providing specially crafted inputs using the IBM1390 or IBM1399 character sets to the `iconv()` function. This could lead to an assertion failure, causing the application to crash and resulting in a Denial of Service (DoS).", "title": "redhat - https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-4046.json" }, { "category": "description", "text": "The iconv() function in the GNU C Library versions 2.43 and earlier may crash due to an assertion failure when converting inputs from the IBM1390 or IBM1399 character sets, which may be used to remotely crash an application. This vulnerability can be trivially mitigated by removing the IBM1390 and IBM1399 character sets from systems that do not need them.", "title": "debian - https://security-tracker.debian.org/tracker/CVE-2026-4046" }, { "category": "description", "text": "iconv crash due to assertion failure with untrusted input", "title": "microsoft - https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Mar" }, { "category": "other", "text": "0.0004", "title": "EPSS" }, { "category": "other", "text": "3.9", "title": "NCSC Score" }, { "category": "other", "text": "Is related to (a version of) an uncommon product, There is product data available from source Certbundde", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "Is related to a product by vendor Debian, There is product data available from source Debian, Is related to a product by vendor Open Source", "title": "NCSC Score top decreasing factors" }, { "category": "details", "text": "Severity: 3\n", "title": "Vendor assessment" } ], "product_status": { "known_affected": [ "CSAFPID-5965491", "CSAFPID-1439315", "CSAFPID-1439317", "CSAFPID-1439319", "CSAFPID-1439321", "CSAFPID-1439328", "CSAFPID-1439329", "CSAFPID-1441502", "CSAFPID-1441503", "CSAFPID-1441504", "CSAFPID-1441505", "CSAFPID-1441506", "CSAFPID-1441507", "CSAFPID-2858634", "CSAFPID-2898794", "CSAFPID-1398441", "CSAFPID-1398444", "CSAFPID-5968073", "CSAFPID-5826718" ] }, "references": [ { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/4xxx/CVE-2026-4046.json" }, { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-4046" }, { "category": "external", "summary": "Source - redhat", "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-4046.json" }, { "category": "external", "summary": "Source - debian", "url": "https://security-tracker.debian.org/tracker/CVE-2026-4046" }, { "category": "external", "summary": "Source - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0918.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; redhat", "url": "https://sourceware.org/bugzilla/show_bug.cgi?id=33980" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd; redhat", "url": "https://sourceware.org/git/?p=glibc.git;a=blob_plain;f=advisories/GLIBC-SA-2026-0007;hb=HEAD" }, { "category": "external", "summary": "Reference - redhat", "url": "https://www.cve.org/CVERecord?id=CVE-2026-4046" }, { "category": "external", "summary": "Reference - redhat", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4046" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0918.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0918" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://seclists.org/oss-sec/2026/q1/413" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://sourceware.org/git/?p=glibc.git%3Ba%3Dblob_plain%3Bf%3Dadvisories%2FGLIBC-SA-2026-0007" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2453117" } ], "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-1441502", "CSAFPID-1441503", "CSAFPID-1441504", "CSAFPID-1441505", "CSAFPID-1441506", "CSAFPID-1441507", "CSAFPID-2858634", "CSAFPID-2898794" ] } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH" }, "products": [ "CSAFPID-1398441", "CSAFPID-1398444", "CSAFPID-1439315", "CSAFPID-1439317", "CSAFPID-1439319", "CSAFPID-1439321", "CSAFPID-1439328", "CSAFPID-1439329", "CSAFPID-1441502", "CSAFPID-1441503", "CSAFPID-1441504", "CSAFPID-1441505", "CSAFPID-1441506", "CSAFPID-1441507", "CSAFPID-2858634", "CSAFPID-2898794", "CSAFPID-5826718", "CSAFPID-5965491", "CSAFPID-5968073" ] } ], "title": "CVE-2026-4046" } ] }