Null Pointer Dereference vulnerability exists in D-Link DSL-2740R UK_1.01, which could…
Priority LOW 35CWE-476Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-476.
Summary
Null Pointer Dereference vulnerability exists in D-Link DSL-2740R UK_1.01, which could let a remove malicious user cause a denial of service via the send_hnap_unauthorized function. It could be triggered by sending crafted POST request to /HNAP1/. NOTE: The DSL-2740R and all hardware revisions are considered End of Life and as such this issue will not be patched
Why it matters now
EPSS 0.01127 66th percentileScored 2026-11-07
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:dsl-2740r_firmware:uk_1.01:*:*:*:*:*:*:* | uk_1.01 | Vulnerable | D-Link Japan K.K. |
| cpe:2.3:h:dlink:dsl-2740r:-:*:*:*:*:*:*:* | not specified by NVD | Running on | D-Link Japan K.K. |
- cpe:2.3:o:dlink:dsl-2740r_firmware:uk_1.01:*:*:*:*:*:*:* Versions uk_1.01 Vulnerable ·D-Link Japan K.K.
- cpe:2.3:h:dlink:dsl-2740r:-:*:*:*:*:*:*:* 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-2021-29294
- 2026-10-03 Alias added: GHSA-4gpq-jpqc-j6v2
References
More D-Link Japan K.K. Dsl-2740r Firmware vulnerabilities
- TI-2026-06151 D-Link DSL-2740R Wireless Setup Section cross site scripting CVSS 4.0MEDIUM 4.8
Sources
- CVE-2021-29294 · CVE Program
- CVE-2021-29294 · NVD
- FIRST EPSS
- GHSA-4gpq-jpqc-j6v2 · 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