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CVE-2021-20847


Cross-site scripting vulnerability in Wi-Fi STATION SH-52A (38JP_1_11G, 38JP_1_11J, 38JP_1_11K, 38JP_1_11L, 38JP_1_26F, 38JP_1_26G, 38JP_1_26J, 38JP_2_03B, and 38JP_2_03C) allows a remote unauthenticated attacker to inject an arbitrary script via WebUI of the device.


Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 6.1, indicating it can be exploited remotely over the network with relatively low complexity though user interaction is required and does not require pre-existing privileges . The vulnerability impacts limited data confidentiality, limited integrity, for affected systems. Impacting 2 products from nttdocomo, from nttdocomo 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

2021-12-01T03:15:06.590

Last Modified

2026-06-17T03:34:32.150

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.1 (MEDIUM)

CVSSv2 Vector

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

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

8.6

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-79

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System nttdocomo wi-fi_station_sh-52a_firmware 38jp_1_11g Yes
Operating System nttdocomo wi-fi_station_sh-52a_firmware 38jp_1_11j Yes
Operating System nttdocomo wi-fi_station_sh-52a_firmware 38jp_1_11k Yes
Operating System nttdocomo wi-fi_station_sh-52a_firmware 38jp_1_11l Yes
Operating System nttdocomo wi-fi_station_sh-52a_firmware 38jp_1_26f Yes
Operating System nttdocomo wi-fi_station_sh-52a_firmware 38jp_1_26g Yes
Operating System nttdocomo wi-fi_station_sh-52a_firmware 38jp_1_26j Yes
Operating System nttdocomo wi-fi_station_sh-52a_firmware 38jp_2_03b Yes
Operating System nttdocomo wi-fi_station_sh-52a_firmware 38jp_2_03c Yes
Hardware nttdocomo wi-fi_station_sh-52a - 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 nttdocomo'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.