CVE-2024-47864Network attack vector

Web console hang via hidden debug buffer overflow

Published Dec 23, 2024 · Updated Dec 24, 2024

Buffer overflow in Sharp SH-52B, SH-54C, and HR02 firmware allows remote attackers on the local network to hang the web console. The concealed web interface exposes a debug function that copies oversized request data without enforcing the destination buffer's size. Reachability requires LAN access over Wi-Fi, USB, or Ethernet and knowledge unavailable through normal operation; the reported consequence is a router hang.

CVSS severity5.3
Medium
EPSS probability0.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in Sharp SH-52B, SH-54C, and HR02 firmware allows remote attackers on the local network to hang the web console. The concealed web interface exposes a debug function that copies oversized request data without enforcing the destination buffer's size. Reachability requires LAN access over Wi-Fi, USB, or Ethernet and knowledge unavailable through normal operation; the reported consequence is a router hang.

The record

CVE
CVE-2024-47864
Published
Dec 23, 2024
Updated
Dec 24, 2024
Vendor
Sharp Corporation
Product
Wi-Fi STATION SH-54C
Classifications
CWE-120, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 23, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 24, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=S6.60.00 and earlier

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Sharp Corporation · Wi-Fi STATION SH-54Cversion=S6.60.00 and earlier
Sharp Corporation · Wi-Fi STATION SH-52Bversion=S3.87.11 and earlier
Sharp Corporation · home 5G HR02version=S5.82.00 and earlier

Published CVSS scores

5.3JPCERT/CCCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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