Lack of authentication mechanisms on the device
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-306.
Summary
The Bosch software tools AccessIPConfig.exe and AmcIpConfig.exe are used to configure certains settings in AMC2 devices. The tool allows putting a password protection on configured devices to restrict access to the configuration of an AMC2. An attacker can circumvent this protection and make unauthorized changes to configuration data on the device. An attacker can exploit this vulnerability to manipulate the device\'s configuration or make it unresponsive in the local network. The attacker needs to have access to the local network, typically even the same subnet.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Bosch | AMS | before 4.0 | 4.0 | Patch available | CNA |
| Bosch | APE | up to 3.8.x | — | No fix listed | CNA |
| Bosch | BIS | before 4.9.1 | 4.9.1 | Patch available | CNA |
| Bosch | AMC2 | all | — | No fix listed | CNA |
- AMS VendorBosch Affected before 4.0 Fixed in 4.0 Patch available CNA
- APE VendorBosch Affected up to 3.8.x Fixed in — No fix listed CNA
- BIS VendorBosch Affected before 4.9.1 Fixed in 4.9.1 Patch available CNA
- AMC2 VendorBosch Affected all Fixed in — No fix listed CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:bosch:amc2_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Bosch |
| cpe:2.3:h:bosch:amc2:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Bosch |
| cpe:2.3:a:bosch:access_management_system:3.0:*:*:*:*:*:*:* | 3.0 | Vulnerable | Bosch |
| cpe:2.3:a:bosch:access_professional_edition:*:*:*:*:*:*:*:* | up to 3.8.0 | Vulnerable | Bosch |
| cpe:2.3:a:bosch:building_integration_system:*:*:*:*:*:*:*:* | before 4.9.1 | Vulnerable | Bosch |
- cpe:2.3:o:bosch:amc2_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Bosch
- cpe:2.3:h:bosch:amc2:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Bosch
- cpe:2.3:a:bosch:access_management_system:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·Bosch
- cpe:2.3:a:bosch:access_professional_edition:*:*:*:*:*:*:*:* Versions up to 3.8.0 Vulnerable ·Bosch
- cpe:2.3:a:bosch:building_integration_system:*:*:*:*:*:*:*:* Versions before 4.9.1 Vulnerable ·Bosch
Remediation
- Fix · CNA AMS (Bosch) Fixed in 4.0
- Fix · CNA BIS (Bosch) Fixed in 4.9.1
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Bosch AMS, BIS 4.0, 4.9.1
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2021-06206 Use of Hard-coded Cryptographic KeyPriority LOW 30
Timeline
- 2026-10-02 Threatist record created from CVE-2021-23843
- 2026-10-03 Alias added: GHSA-mw72-7m3m-vvm2
References
More Bosch Access Management System vulnerabilities
- TI-2021-06206 Use of Hard-coded Cryptographic Key CVSS 3.1HIGH 7.1
Sources
- CVE-2021-23843 · CVE Program
- CVE-2021-23843 · NVD
- FIRST EPSS
- GHSA-mw72-7m3m-vvm2 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences