HIGH

CVE-2021-28838

CVSS v3

7.5

HIGH

EPSS Score

2.2 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2021-28838 yet.

Full record on NVD

Description

Null pointer dereference vulnerability in D-Link DAP-2310 2,10RC039, DAP-2330 1.10RC036 BETA, DAP-2360 2.10RC055, DAP-2553 3.10rc039 BETA, DAP-2660 1.15rc131b, DAP-2690 3.20RC115 BETA, DAP-2695 1.20RC093, DAP-3320 1.05RC027 BETA and DAP-3662 1.05rc069 in the sbin/httpd binary. The crash happens at the `atoi' operation when a specific network package are sent to the httpd binary.

Technical details

Published: 2021-08-10

Frequently asked questions

What is CVE-2021-28838?

Is CVE-2021-28838 actively exploited?

Active exploitation of CVE-2021-28838 has not been confirmed. Its EPSS score was 2.2% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-28838?

CVE-2021-28838 has a CVSS v3 base score of 7.5 (HIGH severity).

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