Information disclosure in D-LINK
Priority MEDIUM 45CWE-200Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-200.
Summary
An information disclosure vulnerability exists in the Syslog functionality of D-LINK DIR-3040 1.13B03. A specially crafted network request can lead to the disclosure of sensitive information. An attacker can send an HTTP request to trigger this vulnerability.
Why it matters now
EPSS 0.32385 98th 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 |
|---|---|---|---|---|---|
| — | D-LINK | D-LINK DIR-3040 1.13B03 | — | No fix listed | CNA |
- D-LINK Vendor— Affected D-LINK DIR-3040 1.13B03 Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:dlink:dir-3040_firmware:1.13b03:*:*:*:*:*:*:* | 1.13b03 | 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:1.13b03:*:*:*:*:*:*:* Versions 1.13b03 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.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-21816
- 2026-10-03 Alias added: GHSA-c5h4-7vc8-8w5m
References
More D-Link Japan K.K. Dir-3040 Firmware vulnerabilities
- TI-2022-22070 D-Link DIR-3040 device with firmware 120B03 was discovered to contain a command injection… CVSS 3.1CRITICAL 9.8
- TI-2021-04865 Hard-coded credentials in D-Link CVSS 3.1CRITICAL 9.8
- TI-2021-04958 Hard-coded credentials in D-Link CVSS 3.1CRITICAL 9.8
- TI-2023-21839 Stack-based buffer overflow in D-Link DIR-3040 CVSS 3.1HIGH 8.8
- TI-2023-21838 Heap-based buffer overflow in D-Link DIR-3040 CVSS 3.1HIGH 8.8
- TI-2022-21416 Heap-based buffer overflow in D-Link DIR-3040 CVSS 3.1HIGH 8.8
Sources
- CVE-2021-21816 · CVE Program
- CVE-2021-21816 · NVD
- FIRST EPSS
- GHSA-c5h4-7vc8-8w5m · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences