Security readout for executives and security teams
Plain-English summary
CVE-2021-47822 is a local privilege escalation issue in DiskBoss Service 12.2.18. A user who already has local access could abuse an unquoted Windows service path to run code with higher privileges during service startup. This is mainly a risk on shared workstations, servers, or environments where low-privileged users can log in.
Executive priority
Prioritize remediation on multi-user systems, servers, and administrator workstations where local access is possible. Treat as high priority if DiskBoss 12.2.18 is deployed broadly or on sensitive systems, but not as an internet-facing emergency based on current evidence.
Technical view
DiskBoss Service 12.2.18 configures diskbsa.exe with an unquoted service path, mapped to CWE-428. With local low-privileged access, an attacker may influence path resolution and achieve elevated code execution at service start. The CVSS v4.0 score is 8.5, with local attack vector, low complexity, low privileges required, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to systems running DiskBoss Service 12.2.18, especially Windows hosts allowing non-administrative local users or interactive access. No affected versions beyond 12.2.18 are identified in the provided sources.
Exploitation context
A public ExploitDB reference exists, but the provided sources do not show CISA KEV listing or confirmed active exploitation. This is not remotely exploitable by itself; the attacker needs local access and a service restart or startup condition.
Researcher notes
The source bundle identifies DiskBoss Service 12.2.18 only. Evidence supports local privilege escalation via unquoted service path. Public exploit material is referenced, but active exploitation is not established. No specific vendor patch version is named in the provided sources.
Mitigation direction
- Identify hosts running DiskBoss Service 12.2.18.
- Check DiskBoss vendor guidance for fixed versions or configuration recommendations.
- Upgrade or replace affected installations if vendor guidance provides a safe version.
- Ensure the DiskBoss service executable path is properly quoted where supported.
- Restrict write permissions on service path directories to administrators only.
Validation and detection
- Inventory installed DiskBoss versions across Windows endpoints and servers.
- Review the DiskBoss service binary path for unquoted spaces.
- Check permissions on each directory in the service path.
- Confirm non-administrative users cannot write to service path locations.
- Document whether compensating controls or vendor updates are applied.
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-428: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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-2021-47822 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
- 8.5 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
8.5HighVector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-49899CVE reference · exploit
- Official Vendor HomepageCVE reference · product
- VulnCheck Advisory: DiskBoss Service 12.2.18 - 'diskbsa.exe' Unquoted Service PathCVE reference · third-party-advisory
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.
Unquoted Search Path or Element
Unquoted Search Path or Element represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.