home 5G HR02: Active Debug Code
CVE-2024-46873 is a critical-severity active debug code vulnerability in home 5G HR02 from Sharp, with a CVSS 3.0 base score of 9.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected home 5G HR02 versions: S5.82.00 and earlier. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.74% chance of exploitation within 30 days, higher than 55% of scored CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Check which version of home 5G HR02 you run against the affected versions below, and install the vendor's latest release.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Sharp | home 5G HR02 | S5.82.00 and earlier | Not stated |
| Sharp | Wi-Fi STATION SH-52B | S3.87.11 and earlier | Not stated |
| Sharp | Wi-Fi STATION SH-54C | S6.60.00 and earlier | Not stated |
| Sharp | Wi-Fi STATION SH-05L | 01.00.C0 and earlier | Not stated |
| Sharp | PocketWifi 809SH | 01.00.B9 and earlier | Not stated |
| Sharp | Speed Wi-Fi NEXT W07 | 02.00.48 and earlier | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by CNA (jpcert.or.jp).
Official description
Multiple SHARP routers leave the hidden debug function enabled. An arbitrary OS command may be executed with the root privilege by a remote unauthenticated attacker.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Active Debug Code
The product is released with debugging code still enabled or active.
How developers prevent this class of flaw
- Remove debug code before deploying the application.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in home 5G HR02
- 7.2 High severity
- 7.2 High severity
Recent Active Debug Code vulnerabilities
- 8.1 High severity
- 7.8 High severity
- 7.2 High severity
- 7.5 High severity
- 7.2 High severity
- 9.8 Critical severity
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