Security readout for executives and security teams
Plain-English summary
This flaw affects Bosch CPP Firmware web management interfaces. If an administrator is logged in, a remote attacker could trick them into opening a malicious page or link that makes the device perform actions as that administrator.
Executive priority
Treat this as a high-priority exposure-reduction issue for Bosch camera environments, especially where management interfaces are reachable beyond trusted administration networks. Confirm vendor guidance before remediation planning.
Technical view
CVE-2021-23849 is a CSRF issue in the Bosch CPP Firmware web-based interface. The CVSS 3.1 score is 7.5 with network attack vector, no attacker privileges, required user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely where Bosch camera management interfaces using CPP Firmware are reachable by administrators through a browser, especially from untrusted networks. The attack requires a logged-in victim and social engineering.
Exploitation context
The provided sources do not show CISA KEV listing or confirmed active exploitation. Exploitation requires tricking a logged-in camera user into clicking a malicious link or visiting a malicious website.
Researcher notes
Evidence in the supplied bundle identifies CSRF, affected Bosch CPP Firmware, CVSS 7.5, and required user interaction. The bundle does not provide model-specific fixed versions, exploit details, or confirmed exploitation evidence.
Mitigation direction
- Check Bosch PSIRT guidance for affected models, fixed firmware, or vendor mitigations.
- Restrict web management access to trusted administrative networks or VPN paths.
- Reduce internet exposure of affected camera management interfaces.
- Train administrators not to browse untrusted sites while logged into camera management.
- Review session handling and logout practices for administrative users.
Validation and detection
- Inventory Bosch devices running CPP Firmware.
- Identify which devices expose the web management interface.
- Confirm whether management access is reachable from untrusted networks.
- Review Bosch advisory against exact device models and firmware versions.
- Check change logs for unexpected administrative actions.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-352: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-23849 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H1.65.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://psirt.bosch.com/security-advisories/bosch-sa-033305-bt.htmlCVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Cross-Site Request Forgery (CSRF)
Cross-Site Request Forgery (CSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.