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7.5
D-Link DIR-513 Router: Guest Network Setup Parameter Can Cause Crash
CVE-2025-70251
Summary
A bug in the D-Link DIR-513 router's guest network setup feature can cause the router to crash if an attacker sends a specially crafted request to the router. This can lead to a denial of service (crash) and potentially allow an attacker to gain access to the router's configuration. To fix this, update the router's firmware to the latest version.
What to do
No fix is available yet. Check with your software vendor for updates.
Affected software
| Vendor | Product | Affected versions | Fix available |
|---|---|---|---|
| dlink | dir-513_firmware | 1.10 | – |
Original title
Stack buffer overflow vulnerability in D-Link DIR-513 v1.10 via the webPage parameter to goform/formWlanGuestSetup.
Original description
Stack buffer overflow vulnerability in D-Link DIR-513 v1.10 via the webPage parameter to goform/formWlanGuestSetup.
Vulnerability type
CWE-121
Stack-based Buffer Overflow
Published: 10 Mar 2026 · Updated: 13 Mar 2026 · First seen: 10 Mar 2026