CVE-2021-29294

7.5 highEPSS 1.1%

High (7.5) in dlink dsl-2740r firmware. EPSS 1.1% chance of exploitation in the next 30 days.

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

Severity

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 1.1% chance of exploitation in the next 30 days; higher than 66% of CVEs (scores of 2026-10-31)
CWE: CWE-476
Published: 2021-08-10
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

dlink:dsl-2740r_firmware

References

https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10213
https://www.dlink.com/en/security-bulletin/
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10213
https://www.dlink.com/en/security-bulletin/

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