CVE-2021-31326
D-Link DIR-816 A2 1.10 B05 allows unauthenticated attackers to arbitrarily reset the device via a...
D-Link DIR-816 A2 1.10 B05 allows unauthenticated attackers to arbitrarily reset the device via a crafted tokenid parameter to /goform/form2Reboot.cgi.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
D-Link DIR-816 A2 1.10 B05 allows unauthenticated attackers to arbitrarily reset the device via a crafted tokenid parameter to /goform/form2Reboot.cgi.
- Record
CVE-2021-31326- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 9.0 High
AV:N/AC:L/Au:N/C:P/I:P/A:C - Weakness
- CWE-287
- Updated
- 2026-11-02
CVE List No score
D-Link DIR-816 A2 1.10 B05 allows unauthenticated attackers to arbitrarily reset the device via a crafted tokenid parameter to /goform/form2Reboot.cgi.
- Record
CVE-2021-31326- Updated
- 2026-11-02
EUVDEUVD-2021-18236 No score
D-Link DIR-816 A2 1.10 B05 allows unauthenticated attackers to arbitrarily reset the device via a crafted tokenid parameter to /goform/form2Reboot.cgi.
- Record
EUVD-2021-18236- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-frrx-wmgx-653x
D-Link DIR-816 A2 1.10 B05 allows unauthenticated attackers to arbitrarily reset the device via a...
D-Link DIR-816 A2 1.10 B05 allows unauthenticated attackers to arbitrarily reset the device via a crafted tokenid parameter to /goform/form2Reboot.cgi.
- Record
GHSA-frrx-wmgx-653x- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-77
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-31326 is a critical vulnerability (CVSS 9.8) in Dlink Dir-816 Firmware, published March 23, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.20%, the 82nd percentile. No source names a fixed version.