{"id":"CVE-2026-89021","revision":null,"records":[{"revision":"e7099f5a5b614cdb854df6673a18bf61","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89021","aliases":[],"title":"MikroTik RouterOS Path Traversal via Container OCI/tar Image Extraction","description":"MikroTik RouterOS before 7.24.2 contains a path traversal vulnerability in the container package OCI/tar image extraction that allows attackers to write files outside the container root by supplying a crafted container image with symlinks pointing to arbitrary paths. Attackers can exploit unsanitized tar member path extraction during container import via /container/add to achieve root-privileged file creation, directory creation, file deletion via overlayfs whiteout, and hardlink creation on the persistent data partition without ever starting the container. The 7.23.x long-term branch does not contain this fix; the container binaries in container-7.23.3.npk and container-7.23.4.npk are byte-identical. The vendor has confirmed that the issue is not resolved in the long-term release and that the fix is carried forward only in the stable branch from 7.24.2 onward, with no backport to the long-term branch planned.","state":0,"publishedAt":"2026-09-14T18:06:31.966+00:00","modifiedAt":"2026-10-01T15:21:49.68+00:00","affected":[{"ecosystem":"Vendor product","name":"RouterOS","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"defaultStatus\": \"unknown\",\n                    \"vendor\": \"MikroTik\",\n                    \"product\": \"RouterOS\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"7.24.2\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:N/VI:H/VA:N/SC:N/SI:H/SA:L","score":6.9,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:H/A:L","score":6.9,"severity":"MEDIUM"}],"references":["https://forum.mikrotik.com/t/7-24-2-stable-is-released/272800","https://www.vulncheck.com/advisories/mikrotik-routeros-path-traversal-via-container-oci-tar-image-extraction"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89021","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89021","identifiers":["CVE-2026-89021"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-11T22:56:48.8843611+00:00","complete":true,"records":1779,"lastAttemptAt":"2026-11-11T22:56:48.8843611+00:00","lastSuccessAt":"2026-11-11T22:56:49.05921+00:00","error":null,"lastVerifiedAt":"2026-11-11T22:56:49.0592109+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-de3b77103708811b6494d2ff7c979037d73ae579742cd1649a5c765137ae5083-898e28488849fdb15ef1568d1126b1e135cc449eeb5b00fe8f5e0e94343c0306","complete":true,"records":424438,"lastAttemptAt":"2026-11-11T22:56:48.5548519+00:00","lastSuccessAt":"2026-11-11T22:56:48.275736+00:00","error":null,"lastVerifiedAt":"2026-11-11T22:56:48.5548519+00:00","snapshotPublishedAt":"2026-11-11T22:23:10+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-e879cc5fb76844c78c3f92ed84656b7a","complete":false,"records":13760,"lastAttemptAt":"2026-11-11T23:06:58.1195705+00:00","lastSuccessAt":"2026-11-11T23:06:58.115+00:00","error":"420 identifier lookups failed; latest failures include AccessDenied (HTTP 403). Other identifiers were checked independently.","lastVerifiedAt":"2026-11-11T23:06:58.115+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13301,"expectedIdentifiers":13813,"failedIdentifiers":420},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-11T22:56:48.8843611+00:00","complete":true,"records":1097,"lastAttemptAt":"2026-11-11T22:56:48.8843611+00:00","lastSuccessAt":"2026-11-11T22:56:49.0602607+00:00","error":null,"lastVerifiedAt":"2026-11-11T22:56:49.0602611+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-b9dd8b3871d74cf586e393481617016c","complete":true,"records":13758,"lastAttemptAt":"2026-11-11T22:57:14.2746089+00:00","lastSuccessAt":"2026-11-11T22:57:14.271+00:00","error":null,"lastVerifiedAt":"2026-11-11T22:57:14.271+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13813,"expectedIdentifiers":13813,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-3562b6c78fd1bd0f0b55daf66a0926ae24f65e462df7f6d928caad458fc696bf","complete":true,"records":9947,"lastAttemptAt":"2026-11-11T22:56:48.8324795+00:00","lastSuccessAt":"2026-11-11T04:27:43.6877707+00:00","error":null,"lastVerifiedAt":"2026-11-11T22:56:48.8324795+00:00","snapshotPublishedAt":"2026-11-11T03:32:46+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-456002455e0ab94bb92c95476d4e6d175c104cd594749982afd96c893728ecbc","complete":true,"records":2010,"lastAttemptAt":"2026-11-11T22:56:48.6203486+00:00","lastSuccessAt":"2026-11-11T02:36:58.1276999+00:00","error":null,"lastVerifiedAt":"2026-11-11T22:56:48.6203486+00:00","snapshotPublishedAt":"2026-11-11T01:17:51+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-baa8362b4daf9e5f39d5563775a55935e7b442c0735d33274a921579ce4a0d66","complete":true,"records":3093,"lastAttemptAt":"2026-11-11T22:56:48.8497934+00:00","lastSuccessAt":"2026-11-11T13:00:02.5446881+00:00","error":null,"lastVerifiedAt":"2026-11-11T22:56:48.8497934+00:00","snapshotPublishedAt":"2026-11-11T12:47:47+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-685fe7fb2b690656c910a1ea42a9d294e8353311ac8ecfa691a9b0ff1b328804","complete":true,"records":231695,"lastAttemptAt":"2026-11-11T22:56:48.732015+00:00","lastSuccessAt":"2026-11-11T21:58:47.7265713+00:00","error":null,"lastVerifiedAt":"2026-11-11T22:56:48.732015+00:00","snapshotPublishedAt":"2026-11-11T21:48:35+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}