HGW BL1500HM: Use of Weak Credentials
CVE-2024-29071 is a high-severity use of weak credentials vulnerability in HGW BL1500HM from KDDI, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited from the same local network by an unauthenticated attacker, without any action from a user. Affected HGW BL1500HM versions: Ver 002.001.013 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 0.36% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of HGW BL1500HM you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| KDDI | HGW BL1500HM | Ver 002.001.013 and earlier | Not stated |
| Kddi | hgw_bli500hm_firmware | 002.001.013 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
- AdjacentThe attacker must be on the same local network segment.
- 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:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by CISA (ADP).
Official description
HGW BL1500HM Ver 002.001.013 and earlier contains a use of week credentials issue. A network-adjacent unauthenticated attacker may change the system settings.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Use of Weak Credentials
The product uses weak credentials (such as a default key or hard-coded password) that can be calculated, derived, reused, or guessed by an attacker.
How developers prevent this class of flaw
- When the user changes or sets a password, check the password against a database of already compromised or breached passwords. These passwords are likely to be used in password guessing attacks.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other references
Other vulnerabilities in HGW BL1500HM
- 8.1 High severity
- 8.8 High severity
Recent Use of Weak Credentials vulnerabilities
- 9.8 Critical severity
- 9.8 Critical severity
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