TI-2021-13308 Aliases CVE-2021-34202 GHSA-rm56-645j-pf84

There are multiple out-of-bounds vulnerabilities in some processes of D-Link…

MEDIUM 40CWE-787Published 2021-06-16 · Updated 2026-07-09

Key facts

Attack vector: Local
Privileges required: Low
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

There are multiple out-of-bounds vulnerabilities in some processes of D-Link AC2600(DIR-2640) 1.01B04. Ordinary permissions can be elevated to administrator permissions, resulting in local arbitrary code execution. An attacker can combine other vulnerabilities to further achieve the purpose of remote code execution.

Why it matters now

EPSS 0.03639 89th 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-2640-us_firmware:1.01b04:::::::*	1.01b04	Vulnerable	D-Link Japan K.K.
cpe:2.3:h:dlink:dir-2640-us:-:::::::*	not specified by NVD	Running on	D-Link Japan K.K.

cpe:2.3:o:dlink:dir-2640-us_firmware:1.01b04:*:*:*:*:*:*:* Versions 1.01b04 Vulnerable ·D-Link Japan K.K.
cpe:2.3:h:dlink:dir-2640-us:-:*:*:*:*:*:*:* Versions not specified by NVD 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-2021-34202
2026-10-03 Alias added: GHSA-rm56-645j-pf84

References

Exploit 1

https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-34202

Advisory 1

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

TI-2021-03434 Path traversal in Quagga Services on D-Link DIR-2640 Routers CVSS 3.1HIGH 8.4
TI-2021-03432 Hard-coded credentials in Quagga Services on D-Link DIR-2640 Routers CVSS 3.1HIGH 8.8
TI-2021-13309 D-Link DIR-2640-US 1.01B04 is vulnerable to Incorrect Access Control. CVSS 3.1HIGH 8.1
TI-2021-13310 D-Link DIR-2640-US 1.01B04 is affected by Insufficiently Protected Credentials. CVSS 3.1MEDIUM 6.8
TI-2021-13307 D-Link DIR-2640-US 1.01B04 is vulnerable to Buffer Overflow. CVSS 3.1HIGH 7.1
TI-2021-03433 Path traversal in Quagga Services on D-Link DIR-2640 Routers CVSS 3.1MEDIUM 6.1

Sources

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