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TI-2021-09829 Aliases CVE-2021-28840GHSA-wg9f-3ccx-6h3j

Null Pointer Dereference vulnerability exists in D-Link DAP-2310 2.07.RC031, DAP-2330…

Priority LOW 37CWE-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 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.

Why it matters now

EPSS 0.02311 83rd 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

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 18

CPEVersionsRoleVendor
cpe:2.3:o:dlink:dap-2310_firmware:2.0.7.rc031:*:*:*:*:*:*:*2.0.7.rc031VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dap-2310:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dap-2330_firmware:1.07.rc028:*:*:*:*:*:*:*1.07.rc028VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dap-2330:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dap-2360_firmware:2.07.rc043:*:*:*:*:*:*:*2.07.rc043VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dap-2360:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dap-2553_firmware:3.06.rc027:*:*:*:*:*:*:*3.06.rc027VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dap-2553:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dap-2660_firmware:1.13.rc074:*:*:*:*:*:*:*1.13.rc074VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dap-2660:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
  • cpe:2.3:o:dlink:dap-2310_firmware:2.0.7.rc031:*:*:*:*:*:*:* Versions 2.0.7.rc031 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dap-2310:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dap-2330_firmware:1.07.rc028:*:*:*:*:*:*:* Versions 1.07.rc028 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dap-2330:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dap-2360_firmware:2.07.rc043:*:*:*:*:*:*:* Versions 2.07.rc043 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dap-2360:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dap-2553_firmware:3.06.rc027:*:*:*:*:*:*:* Versions 3.06.rc027 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dap-2553:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dap-2660_firmware:1.13.rc074:*:*:*:*:*:*:* Versions 1.13.rc074 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dap-2660:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
Show 8 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:dlink:dap-2690_firmware:3.16.rc100:*:*:*:*:*:*:*3.16.rc100VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dap-2690:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dap-2695_firmware:1.17.rc063:*:*:*:*:*:*:*1.17.rc063VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dap-2695:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dap-3320_firmware:1.01.rc014:*:*:*:*:*:*:*1.01.rc014VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dap-3320:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dap-3662_firmware:1.01.rc022:*:*:*:*:*:*:*1.01.rc022VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dap-3662:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
  • cpe:2.3:o:dlink:dap-2690_firmware:3.16.rc100:*:*:*:*:*:*:* Versions 3.16.rc100 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dap-2690:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dap-2695_firmware:1.17.rc063:*:*:*:*:*:*:* Versions 1.17.rc063 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dap-2695:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dap-3320_firmware:1.01.rc014:*:*:*:*:*:*:* Versions 1.01.rc014 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dap-3320:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dap-3662_firmware:1.01.rc022:*:*:*:*:*:*:* Versions 1.01.rc022 Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dap-3662:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-28840
  2. 2026-10-03 Alias added: GHSA-wg9f-3ccx-6h3j

References

Exploit 1

Advisory 2

  • TI-2022-18335 D-Link devices DAP-2310 v2.10rc036 and earlier, DAP-2330 v1.06rc020 and earlier, DAP-2360… CVSS 3.1HIGH 7.5
  • TI-2016-01419 Buffer overflow in D-Link DAP-2310 2.06 and earlier, DAP-2330 1.06 and earlier, DAP-2360… CVSS 3.0CRITICAL 9.8
  • TI-2021-09827 Null pointer dereference vulnerability in D-Link DAP-2310 2,10RC039, DAP-2330 1.10RC036… CVSS 3.1HIGH 7.5
  • TI-2021-09828 Null Pointer Dereference vulnerability exists in D-Link DAP-2310 2.07.RC031, DAP-2330… CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences