TI-2021-08675 Aliases CVE-2021-27114 GHSA-h8c7-76x8-mr96

An issue was discovered in D-Link DIR-816 A2 1.10 B05 devices.

MEDIUM 63CWE-787Published 2021-04-14 · Updated 2024-08-03

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

An issue was discovered in D-Link DIR-816 A2 1.10 B05 devices. Within the handler function of the /goform/addassignment route, a very long text entry for the"'s_ip" and "s_mac" fields could lead to a Stack-Based Buffer Overflow and overwrite the return address.

Why it matters now

EPSS 0.24552 97th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:dlink:dir-816_firmware:1.10b05:::::::*	1.10b05	Vulnerable	D-Link Japan K.K.
cpe:2.3:h:dlink:dir-816:a2:::::::*	a2	Running on	D-Link Japan K.K.

cpe:2.3:o:dlink:dir-816_firmware:1.10b05:*:*:*:*:*:*:* Versions 1.10b05 Vulnerable ·D-Link Japan K.K.
cpe:2.3:h:dlink:dir-816:a2:*:*:*:*:*:*:* Versions a2 Running on ·D-Link Japan K.K.

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-27114
2026-10-03 Alias added: GHSA-h8c7-76x8-mr96

References

Exploit 1

https://github.com/GD008/vuln/blob/main/DIR-816_stackoverflow.md

Advisory 1

https://www.dlink.com/en/security-bulletin/

TI-2025-28895 An issue D-Link DIR-816-A2 DIR-816A2_FWv1.10CNB05_R1B011D88210 allows a remote attacker… CVSS 3.1CRITICAL 9.8
TI-2024-38028 An access control issue in the component formDMZ.cgi of D-Link… CVSS 3.1CRITICAL 9.8
TI-2023-09977 Command Injection vulnerability in D-Link Dir 816 with firmware version… CVSS 3.1CRITICAL 9.8
TI-2022-20974 D-Link DIR-816 A2 1.10 B05 was discovered to contain a stack overflow via the pskValue… CVSS 3.1CRITICAL 9.8
TI-2022-20973 D-Link DIR-816 A2 1.10 B05 was discovered to contain a stack overflow via the… CVSS 3.1CRITICAL 9.8
TI-2022-20972 D-Link DIR-816 A2 1.10 B05 was discovered to contain a stack overflow via the pskValue… CVSS 3.1CRITICAL 9.8

See all 72 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences