How severe is CVE-2026-0403?

CVE-2026-0403 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-0403 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-0403?

CVE-2026-0403 primarily affects Netgear Rbe971 Firmware. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-0403?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-0403 have an EU (EUVD) identifier?

Yes. CVE-2026-0403 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2232.

When was CVE-2026-0403 published?

CVE-2026-0403 was published on 2026-01-13 and last updated on 2026-06-17.

CVE-2026-0403

CVE-2026-0403 is a high-severity vulnerability in Netgear Rbe971 Firmware with a CVSS 3.x base score of 8.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 8.0)
CVSS v4: 1.1
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-2232
Weakness: CWE-20
Affected product: Netgear Rbe971 Firmware
Published: 2026-01-13
Last modified: 2026-06-17

Description

An insufficient input validation vulnerability in NETGEAR Orbi routers allows attackers connected to the router's LAN to execute OS command injections.

Frequently asked questions

What is CVE-2026-0403?: An insufficient input validation vulnerability in NETGEAR Orbi routers allows attackers connected to the router's LAN to execute OS command injections.
How severe is CVE-2026-0403?: CVE-2026-0403 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-0403 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-0403?: CVE-2026-0403 primarily affects Netgear Rbe971 Firmware. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-0403?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-0403 have an EU (EUVD) identifier?: Yes. CVE-2026-0403 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2232.
When was CVE-2026-0403 published?: CVE-2026-0403 was published on 2026-01-13 and last updated on 2026-06-17.

References

Affected products (10)

cpe:2.3:o:netgear:rbe971_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:rbe970_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:rbr750_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:rbr850_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:rbr860_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:rbs750_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:rbs850_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:rbs860_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:rbre960_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:rbse960_firmware:*:*:*:*:*:*:*:*

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