Is CVE-2025-52222 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2025-52222 being exploited in the wild.

How severe is CVE-2025-52222?

High severity, with a CVSS score of 7.5, published 8 April 2026.

Which products and versions are affected?

D-Link DI-8003 v16.07.26A1; D-Link DI-8500 v16.07.26A1; D-Link DI-8003G v17.12.21A1; D-Link DI-8200G v17.12.20A1; and 5 more.

Is there a fix for CVE-2025-52222?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2025-52222 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2025-52222?

Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2025-52222: D-Link DI-series routers buffer overflow in radius_asp

CVE-2025-52222 · Severity: high · CVSS 7.5 · Published 2026-04-08

Multiple D-Link DI-series enterprise routers are affected by a security flaw that can be triggered remotely. By sending a specially crafted request to the device, an attacker can cause the router to crash or become unresponsive. This results in a total loss of network connectivity for all users and systems relying on the affected hardware.

Quick answers

Is CVE-2025-52222 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2025-52222 being exploited in the wild.
How severe is CVE-2025-52222?: High severity, with a CVSS score of 7.5, published 8 April 2026.
Which products and versions are affected?: D-Link DI-8003 v16.07.26A1; D-Link DI-8500 v16.07.26A1; D-Link DI-8003G v17.12.21A1; D-Link DI-8200G v17.12.20A1; and 5 more.
Is there a fix for CVE-2025-52222?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2025-52222 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2025-52222?: Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A classic buffer overflow (CWE-120) exists in the radius_asp function of several D-Link DI-series router models. The vulnerability is triggered by failing to properly validate the length of input provided to several parameters, including rd_en, rd_auth, rd_acct, http_hadmin, http_hadminpwd, rd_key, and rd_ip. An unauthenticated remote attacker can exploit this by sending a crafted network request to the device's management interface. Successful exploitation results in a Denial of Service (DoS) condition, crashing the device and requiring a manual reboot to restore service. Affected firmware versions include v16.07.26A1, v17.12.21A1, and v17.12.20A1 depending on the specific hardware model.

Affected products

D-Link DI-8003 v16.07.26A1
D-Link DI-8500 v16.07.26A1
D-Link DI-8003G v17.12.21A1
D-Link DI-8200G v17.12.20A1
D-Link DI-8200 v16.07.26A1
D-Link DI-8400 v16.07.26A1
D-Link DI-8004w v16.07.26A1
D-Link DI-8100 v16.07.26A1
D-Link DI-8100G v17.12.20A1

Timeline

2026-04-08: disclosed: Initial disclosure date
2026-04-08: advisory: NVD publication date

References

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