# CVE-2026-0403: Insufficient input validation in NETGEAR Orbi routers Status: published. Published: 2026-01-13. Updated: 2026-11-04. An insufficient input validation vulnerability in NETGEAR Orbi routers allows attackers connected to the router's LAN to execute OS command injections. ## Remediation - fix: Devices with automatic updates enabled may already have this patch applied. If not, please check the firmware version and update it to the latest. Fixed in: RBE971 firmware 9.10.0.2 or later https://www.netgear.com/support/product/rbe971 RBE970 firmware 9.10.0.2 or later https://www.netgear.com/support/product/rbe970 RBR750 firmware 7.2.8.5 or later https://www.netgear.com/support/product/rbr750 RBR850 firmware 7.2.8.5 or later https://www.netgear.com/support/product/rbr850 RBR860 firmware 7.2.8.5 or later https://www.netgear.com/support/product/rbr860 RBS750 firmware 7.2.8.5 or later https://www.netgear.com/support/product/rbs750 RBS850 firmware 7.2.8.5 or later https://www.netgear.com/support/product/rbs850 RBS860 firmware 7.2.8.5 or later https://www.netgear.com/support/product/rbs860 RBRE960 firmware 7.2.7.15 or later https://www.netgear.com/support/product/rbre960 RBSE960 firmware 7.2.7.15 or later https://www.netgear.com/support/product/rbse960 (source: CNA: NETGEAR) - fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: NETGEAR) — https://www.netgear.com/support/product/rbr750 - fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: NETGEAR) — https://www.netgear.com/support/product/rbs750 - fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: NETGEAR) — https://www.netgear.com/support/product/rbre960 - fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: NETGEAR) — https://www.netgear.com/support/product/rbse960 - fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: NETGEAR) — https://www.netgear.com/support/product/rbr850 - fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: NETGEAR) — https://www.netgear.com/support/product/rbs850 - fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: NETGEAR) — https://www.netgear.com/support/product/rbe971 - fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: NETGEAR) — https://www.netgear.com/support/product/rbe970 - fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: NETGEAR) — https://www.netgear.com/support/product/rbr860 - fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: NETGEAR) — https://www.netgear.com/support/product/rbs860 ## Affected products and versions - NETGEAR / RBR750: ≥ 0; ≤ 4.6.14.3 (affected, custom). Source: CNA: NETGEAR - NETGEAR / RBS750: ≥ 0; ≤ 4.6.14.3 (affected, custom). Source: CNA: NETGEAR - NETGEAR / RBRE960: ≥ 0; < v7.2.7.15 (affected, custom). Source: CNA: NETGEAR - NETGEAR / RBSE960: ≥ 0; < v7.2.7.15 (affected, custom). Source: CNA: NETGEAR - NETGEAR / RBR850: ≥ 0; < V7.2.8.5 (affected, custom). Source: CNA: NETGEAR - NETGEAR / RBS850: ≥ 0; < V7.2.8.5 (affected, custom). Source: CNA: NETGEAR - NETGEAR / RBE971: ≥ 0; < v9.10.0.2 (affected, custom). Source: CNA: NETGEAR - NETGEAR / RBE970: ≥ 0; < v9.10.0.2 (affected, custom). Source: CNA: NETGEAR - NETGEAR / RBR860: ≥ 0; < v7.2.8.5 (affected, custom). Source: CNA: NETGEAR - NETGEAR / RBS860: ≥ 0; < v7.2.8.5 (affected, custom). Source: CNA: NETGEAR ## Severity and prioritization - CVSS 4.0: 1.1 (low); CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber; source: CNA: NETGEAR - CISA KEV: No listing in collected sources - EPSS: 0.33% as of 2026-11-03; percentile 26.23% - SSVC: exploitation none; automatable no; technical impact total; source ADP: CISA-ADP - Weaknesses: CWE-20 ## Exploit evidence No exploit evidence in collected sources. This is not proof of no exploitation. ## References - https://www.netgear.com/support/product/rbr750 (CNA: NETGEAR; product, patch) - https://www.netgear.com/support/product/rbs750 (CNA: NETGEAR; patch, product) - https://www.netgear.com/support/product/rbre960 (CNA: NETGEAR; product, patch) - https://www.netgear.com/support/product/rbse960 (CNA: NETGEAR; product, patch) - https://www.netgear.com/support/product/rbr850 (CNA: NETGEAR; product, patch) - https://www.netgear.com/support/product/rbs850 (CNA: NETGEAR; product, patch) - https://www.netgear.com/support/product/rbe971 (CNA: NETGEAR; product, patch) - https://www.netgear.com/support/product/rbe970 (CNA: NETGEAR; product, patch) - https://www.netgear.com/support/product/rbr860 (CNA: NETGEAR; product, patch) - https://www.netgear.com/support/product/rbs860 (CNA: NETGEAR; product, patch) - https://kb.netgear.com/000070442/January-2026-NETGEAR-Security-Advisory (CNA: NETGEAR; vendor-advisory) ## Provenance - CNA: NETGEAR: https://www.cve.org/CVERecord?id=CVE-2026-0403; retrieved 2026-11-04; source updated 2026-11-04 - FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-0403; retrieved 2026-11-03; source updated Not reported Revision: 63e4c9122c403aaf4f1261e012808fd4fbd176f4a41f049128b37cb246a29feb Canonical: https://y2.dev/cve/CVE-2026-0403 ## Agent and API access Public CVE pages, Markdown, and JSON are free to read without an account or API key. - Public catalog: https://y2.dev/cve/index.json. 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