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CVE-2021-23843

25
FAUCET Score

CVE-2021-23843 is a high-severity vulnerability affecting Bosch Access Management System, Access Professional Edition, AMC2 devices, AMC2 firmware, and Building Integration System. It allows an attacker to bypass password protection in the AccessIPConfig.exe and AmcIpConfig.exe tools, enabling unauthorized configuration changes or denial of service on AMC2 devices. The attack requires local network access, specifically within the same subnet, and has a CVSS score of 7.8. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:bosch:amc2_firmware:-:*:*:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:a:bosch:access_management_system:3.0:*:*:*:*:*:*:*
<= 3.8.0CPE matchmatch criteria
cpe:2.3:a:bosch:access_professional_edition:*:*:*:*:*:*:*:*
< 4.9.1CPE matchmatch criteria
cpe:2.3:a:bosch:building_integration_system:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.24%
Probability of exploitation in next 30 days
EPSS Percentile
15.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0024 is in the 48th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (6)

cephvendor investigatingvia llm_extracted
d-linkvendor investigatingvia llm_extracted
humansignalvendor investigatingvia llm_extracted
hyperledgervendor investigatingvia llm_extracted
m2teamvendor investigatingvia llm_extracted
roundcubevendor investigatingvia llm_extracted

Vendor Advisories (6)

hyperledgerllm-hyperledger-470c7ac19233adc9HIGH

Multiple vulnerabilities in Bosch AMC2 (Access Modular Controller)

Jan 19, 2022
roundcubellm-roundcube-9ffc39c94b4fd105HIGH

Multiple vulnerabilities in Bosch AMC2 (Access Modular Controller)

Jan 19, 2022
cephllm-ceph-ee6a11d5d011b1daHIGH

Multiple vulnerabilities in Bosch AMC2 (Access Modular Controller)

Jan 19, 2022
humansignalllm-humansignal-a4b197e8033699d8HIGH

Multiple vulnerabilities in Bosch AMC2 (Access Modular Controller)

Jan 19, 2022
d-linkllm-d-link-76d74332efb082fdHIGH

Multiple vulnerabilities in Bosch AMC2 (Access Modular Controller)

Jan 19, 2022
m2teamllm-m2team-8af5edb81375fdddHIGH

Multiple vulnerabilities in Bosch AMC2 (Access Modular Controller)

Jan 19, 2022

References

psirt.bosch.com / security-advisories/BOSCH-SA-940448-BT.html
MitigationVendor Advisory