How severe is CVE-2025-4978?

CVE-2025-4978 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-4978 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 18% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-4978?

CVE-2025-4978 affects Netgear Dgnd3700 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-4978?

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

Does CVE-2025-4978 have an EU (EUVD) identifier?

Yes. CVE-2025-4978 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-15826.

When was CVE-2025-4978 published?

CVE-2025-4978 was published on 2025-05-20 and last updated on 2026-06-17.

CVE-2025-4978

CVE-2025-4978 is a critical-severity vulnerability in Netgear Dgnd3700 Firmware with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 18% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
CVSS v4: 9.3
EPSS exploit prediction: 18% (97th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-15826
Weakness: CWE-287
Affected product: Netgear Dgnd3700 Firmware
Published: 2025-05-20
Last modified: 2026-06-17

Description

A vulnerability, which was classified as very critical, was found in Netgear DGND3700 1.1.00.15_1.00.15NA. This affects an unknown part of the file /BRS_top.html of the component Basic Authentication. The manipulation leads to improper authentication. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. Other products might be affected as well. The vendor was contacted early about this disclosure.

Frequently asked questions

What is CVE-2025-4978?: A vulnerability, which was classified as very critical, was found in Netgear DGND3700 1.1.00.15_1.00.15NA. This affects an unknown part of the file /BRS_top.html of the component Basic Authentication. The manipulation leads to improper authentication. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. Other products might be affected as well. The vendor was contacted early about this disclosure.
How severe is CVE-2025-4978?: CVE-2025-4978 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-4978 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 18% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-4978?: CVE-2025-4978 affects Netgear Dgnd3700 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-4978?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-4978 have an EU (EUVD) identifier?: Yes. CVE-2025-4978 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-15826.
When was CVE-2025-4978 published?: CVE-2025-4978 was published on 2025-05-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:netgear:dgnd3700_firmware:1.1.00.15_1.00.15na:*:*:*:*:*:*:*

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CVE-2019-17373 — Critical (CVSS 9.8): Certain NETGEAR devices allow unauthenticated access to critical .cgi and .htm pages via a substring ending with .jpg,…
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Other CWE-287 (Improper Authentication) vulnerabilities

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CVE-2026-46389 — Critical (CVSS 10.0): UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS…
CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

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