Vulnerability Monitor

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CVE-2021-28838


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.


Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.5, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 18 products from dlink, from dlink, from dlink and 15 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2021, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.


Published

2021-08-10T18:15:07.137

Last Modified

2024-11-21T06:00:18.183

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: PARTIAL
Exploitability Score

10.0

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-476

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System dlink dap-2310_firmware ≤ 2.10rc039 Yes
Hardware dlink dap-2310 - No
Operating System dlink dap-2330_firmware < 1.10rc036 Yes
Operating System dlink dap-2330_firmware 1.10rc036 Yes
Hardware dlink dap-2330 - No
Operating System dlink dap-2360_firmware ≤ 2.10rc055 Yes
Hardware dlink dap-2360 - No
Operating System dlink dap-2553_firmware < 3.10rc039 Yes
Operating System dlink dap-2553_firmware 3.10rc039 Yes
Hardware dlink dap-2553 - No
Operating System dlink dap-2660_firmware ≤ 1.15rc131b Yes
Hardware dlink dap-2660 - No
Operating System dlink dap-2690_firmware < 3.20rc115 Yes
Operating System dlink dap-2690_firmware 3.20rc115 Yes
Hardware dlink dap-2690 - No
Operating System dlink dap-2695_firmware ≤ 1.20rc093 Yes
Hardware dlink dap-2695 - No
Operating System dlink dap-3320_firmware < 1.05rc027 Yes
Operating System dlink dap-3320_firmware 1.05rc027 Yes
Hardware dlink dap-3320 - No
Operating System dlink dap-3662_firmware < 1.05rc069 Yes
Operating System dlink dap-3662_firmware 1.05rc069 Yes
Hardware dlink dap-3662 - No

References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For dlink's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.