CVE-2021-28840
Status: ModifiedHigh (7.5)—
Null Pointer Dereference vulnerability exists in D-Link DAP-2310 2.07.RC031, DAP-2330 1.07.RC028, DAP-2360 2.07.RC043, DAP-2553 3.06.RC027, DAP-2660 1.13.RC074, DAP-2690 3.16.RC100, DAP-2695 1.17.RC063, DAP-3320 1.01.RC014 and DAP-3662 1.01.RC022 in the upload_config function of sbin/httpd binary. When the binary handle the specific HTTP GET request, the content in upload_file variable is NULL in the upload_config function then the strncasecmp would take NULL as first argument, and incur the NULL pointer dereference vulnerability.
CVSS
- Version: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Base score: 7.5
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 2.31%
- Percentile among all scored CVEs: 83
- Score date: 10/5/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
Affected technologies (9)
CWEs
- CWE-476
References
- https://github.com/zyw-200/EQUAFL/blob/main/dlink-email-cve.pdf
- https://github.com/zyw-200/EQUAFL/blob/main/dlink-email-cve2.pdf
- https://www.dlink.com/en/security-bulletin/
- https://github.com/zyw-200/EQUAFL/blob/main/dlink-email-cve.pdf
- https://github.com/zyw-200/EQUAFL/blob/main/dlink-email-cve2.pdf
- https://www.dlink.com/en/security-bulletin/
Raw JSON (NVD)
Show
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