TC7001-10: Unprotected Alternate Channel
CVE-2023-7266 is a high-severity unprotected alternate channel vulnerability in TC7001-10 from Huawei, with a CVSS 3.1 base score of 8.1 out of 10. It can be exploited from the same local network by an unauthenticated attacker, without any action from a user. Affected TC7001-10 versions: 2.0.0.336(SP6C300). The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.28% 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 TC7001-10 you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on huawei.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Huawei | TC7001-10 | 2.0.0.336(SP6C300) | Not stated |
| Huawei | WS7200-10 | WS7200-10-OTA 3.0.3.215-fullpackage(auto_1) | Not stated |
| Huawei | WS7206-10 | WS7206-10-OTA 4.0.0.16(V3R2)-fullpackage(auto) | Not stated |
| Huawei | Tc7001-10 Firmware | 2.0.0.336\(sp6c300\) | Not stated |
| Huawei | Ws7200-10 Firmware | 3.0.3.215 | Not stated |
| Huawei | Ws7206-10 Firmware | 4.0.0.16\(v3r2\) | 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
- NoneNothing can be modified.
- 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:N/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.5 | High | CNA (huawei.com) |
| CVSS 3.1 | 8.1 | High | NVD |
Official description
Some Huawei home routers have a connection hijacking vulnerability. Successful exploitation of this vulnerability may cause DoS or information leakage.(Vulnerability ID:HWPSIRT-2023-76605) This vulnerability has been assigned a (CVE)ID:CVE-2023-7266
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Unprotected Alternate Channel
The product protects a primary channel, but it does not use the same level of protection for an alternate channel.
How developers prevent this class of flaw
- Identify all alternate channels and use the same protection mechanisms that are used for the primary channels.
More Unprotected Alternate Channel vulnerabilities (CWE-420)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Recent Unprotected Alternate Channel vulnerabilities
- 8.1 High severity
- 7.3 High severity
- 10.0 Critical severity
Cisco IOS XE Web UI Privilege Escalation Exploited
- 8.8 High severity
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