TI-2023-21835 Aliases CVE-2023-41226 GHSA-wx9p-r67p-8cjf

Stack-based buffer overflow in D-Link DIR-3040

LOW 34CWE-121Published 2024-05-03 · Updated 2024-08-02

Key facts

Attack vector: Adjacent network
Privileges required: High
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-121 and the CVSS impact.

Summary

D-Link DIR-3040 prog.cgi SetMyDLinkRegistration Stack-Based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DIR-3040 routers. Authentication is required to exploit this vulnerability. The specific flaw exists within the prog.cgi binary, which handles HNAP requests made to the lighttpd webserver listening on TCP ports 80 and 443. The issue results from the lack of proper validation of a user-supplied string before copying it to a fixed-size stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-21652.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.009 59th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
D-Link	DIR-3040	120B03	—	No fix listed	CNA

DIR-3040 VendorD-Link Affected 120B03 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:dlink:dir-3040_firmware::::::::	up to 1.20b03	Vulnerable	D-Link Japan K.K.
cpe:2.3:h:dlink:dir-3040:-:::::::*	not specified by NVD	Running on	D-Link Japan K.K.

cpe:2.3:o:dlink:dir-3040_firmware:*:*:*:*:*:*:*:* Versions up to 1.20b03 Vulnerable ·D-Link Japan K.K.
cpe:2.3:h:dlink:dir-3040:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.

Remediation

No fixed version listed by the sources yet.

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Advisory · 2024-05-03
D-Link DIR-3040 — vendor-provided URL
15 records Highest priority Priority MEDIUM 2 MEDIUM, 13 LOW
Other records, highest priority first
- TI-2023-21839 Stack-based buffer overflow in D-Link DIR-3040Priority MEDIUM 42
- TI-2023-21838 Heap-based buffer overflow in D-Link DIR-3040Priority MEDIUM 42
- TI-2023-21826 Stack-based buffer overflow in D-Link DIR-3040Priority LOW 35
Show all 15 records → Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2023-41226
2026-10-03 Alias added: GHSA-wx9p-r67p-8cjf

References

Patch 1

vendor-provided URL

Advisory 1

ZDI-23-1334

TI-2024-03070 D-Link DNS-320L/DNS-325/DNS-327L/DNS-340L HTTP GET Request nas_sharing.cgi command injection KEVCVSS 3.1CRITICAL 9.8
TI-2024-03069 D-Link DNS-320L/DNS-325/DNS-327L/DNS-340L HTTP GET Request nas_sharing.cgi hard-coded credentials KEVCVSS 3.1CRITICAL 9.8
TI-2024-00708 D-Link DIR-859 HTTP POST Request hedwig.cgi path traversal KEVCVSS 3.1CRITICAL 9.8
TI-2023-10693 OS Command injection vulnerability in D-Link DIR820LA1_FW105B03 allows attackers to… KEVCVSS 3.1CRITICAL 9.8
TI-2022-17249 D-Link Go-RT-AC750 GORTAC750_revA_v101b03 and GO-RT-AC750_revB_FWv200b02 are vulnerable… KEVCVSS 3.1CRITICAL 9.8
TI-2022-09657 D-Link DIR-820L 1.05B03 was discovered to contain remote command execution (RCE)… KEVCVSS 3.1CRITICAL 9.8

See all 979 →

Sources

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