{ "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-2026-5122", "tracking": { "current_release_date": "2026-03-31T16:51:44.250265Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-5122", "initial_release_date": "2026-01-18T13:27:16.526914Z", "revision_history": [ { "date": "2026-01-18T13:27:16.526914Z", "number": "1", "summary": "NCSC Score created." }, { "date": "2026-03-30T11:35:00.447436Z", "number": "2", "summary": "NCSC Score updated." }, { "date": "2026-03-30T15:27:19.692365Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (6).| CWES updated (1)." }, { "date": "2026-03-30T15:27:21.951081Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-03-30T15:39:13.872235Z", "number": "5", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (4).| References created (6).| CWES updated (1)." }, { "date": "2026-03-30T15:39:16.304887Z", "number": "6", "summary": "NCSC Score updated." }, { "date": "2026-03-30T17:38:36.470398Z", "number": "7", "summary": "Unknown change." }, { "date": "2026-03-31T00:43:10.828594Z", "number": "8", "summary": "Source created.| CVE status created. (valid)| Products connected (2)." }, { "date": "2026-03-31T00:43:19.084503Z", "number": "9", "summary": "NCSC Score updated." }, { "date": "2026-03-31T06:43:32.544622Z", "number": "10", "summary": "Description created for source." }, { "date": "2026-03-31T16:51:19.750778Z", "number": "11", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-31T16:51:23.463808Z", "number": "12", "summary": "NCSC Score updated." } ], "status": "interim", "version": "12" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/4.0", "product": { "name": "vers:unknown/4.0", "product_id": "CSAFPID-5963474" } }, { "category": "product_version_range", "name": "vers:unknown/4.1", "product": { "name": "vers:unknown/4.1", "product_id": "CSAFPID-5963475" } }, { "category": "product_version_range", "name": "vers:unknown/4.2", "product": { "name": "vers:unknown/4.2", "product_id": "CSAFPID-5963476" } }, { "category": "product_version_range", "name": "vers:unknown/4.3.0", "product": { "name": "vers:unknown/4.3.0", "product_id": "CSAFPID-5963477" } } ], "category": "product_name", "name": "GoBGP" } ], "category": "vendor", "name": "osrg" }, { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:deb/unknown", "product": { "name": "vers:deb/unknown", "product_id": "CSAFPID-2754030" } } ], "category": "product_name", "name": "gobgp" } ], "category": "product_family", "name": "bookworm" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:deb/unknown", "product": { "name": "vers:deb/unknown", "product_id": "CSAFPID-2754031" } } ], "category": "product_name", "name": "gobgp" } ], "category": "product_family", "name": "bullseye" } ], "category": "vendor", "name": "Debian" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-5122", "cwe": { "id": "CWE-266", "name": "Incorrect Privilege Assignment" }, "notes": [ { "category": "description", "text": "A security flaw has been discovered in osrg GoBGP up to 4.3.0. This affects the function DecodeFromBytes of the file pkg/packet/bgp/bgp.go of the component BGP OPEN Message Handler. Performing a manipulation of the argument domainNameLen results in improper access controls. The attack may be initiated remotely. A high degree of complexity is needed for the attack. The exploitability is reported as difficult. The patch is named 2b09db390a3d455808363c53e409afe6b1b86d2d. It is suggested to install a patch to address this issue.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-5122" }, { "category": "description", "text": "A security flaw has been discovered in osrg GoBGP up to 4.3.0. This affects the function DecodeFromBytes of the file pkg/packet/bgp/bgp.go of the component BGP OPEN Message Handler. Performing a manipulation of the argument domainNameLen results in improper access controls. The attack may be initiated remotely. A high degree of complexity is needed for the attack. The exploitability is reported as difficult. The patch is named 2b09db390a3d455808363c53e409afe6b1b86d2d. It is suggested to install a patch to address this issue.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/5xxx/CVE-2026-5122.json" }, { "category": "description", "text": "A security flaw has been discovered in osrg GoBGP up to 4.3.0. This affects the function DecodeFromBytes of the file pkg/packet/bgp/bgp.go of the component BGP OPEN Message Handler. Performing a manipulation of the argument domainNameLen results in improper access controls. The attack may be initiated remotely. A high degree of complexity is needed for the attack. The exploitability is reported as difficult. The patch is named 2b09db390a3d455808363c53e409afe6b1b86d2d. It is suggested to install a patch to address this issue.", "title": "debian - https://security-tracker.debian.org/tracker/CVE-2026-5122" }, { "category": "other", "text": "0.00033", "title": "EPSS" }, { "category": "other", "text": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "title": "CVSSV4" }, { "category": "other", "text": "6.3", "title": "CVSSV4 base score" }, { "category": "other", "text": "4.0", "title": "NCSC Score" }, { "category": "other", "text": "Is related to (a version of) an uncommon product, There is cwe data available from source Nvd, The value of the most recent EPSS score, The value of the most recent CVSS (V3) score", "title": "NCSC Score top decreasing factors" } ], "product_status": { "known_affected": [ "CSAFPID-5963474", "CSAFPID-5963475", "CSAFPID-5963476", "CSAFPID-5963477", "CSAFPID-2754030", "CSAFPID-2754031" ] }, "references": [ { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-5122" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/5xxx/CVE-2026-5122.json" }, { "category": "external", "summary": "Source - debian", "url": "https://security-tracker.debian.org/tracker/CVE-2026-5122" }, { "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/osrg/gobgp/" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://github.com/osrg/gobgp/commit/2b09db390a3d455808363c53e409afe6b1b86d2d" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://github.com/osrg/gobgp/pull/3343" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://vuldb.com/submit/780124" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://vuldb.com/vuln/354154" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://vuldb.com/vuln/354154/cti" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N", "baseScore": 3.7, "baseSeverity": "LOW" }, "products": [ "CSAFPID-2754030", "CSAFPID-2754031", "CSAFPID-5963474", "CSAFPID-5963475", "CSAFPID-5963476", "CSAFPID-5963477" ] } ], "title": "CVE-2026-5122" } ] }