Security readout for executives and security teams
Plain-English summary
Active WebCam 11.5 for Windows has a local privilege-escalation weakness caused by an unquoted service path. An attacker who already has local low-privileged access could potentially gain administrative privileges. This is not a remote internet-facing flaw by itself, and the provided sources do not show known active exploitation.
Executive priority
Treat as a high-priority endpoint hardening issue, not an emergency internet-wide incident. Prioritize discovery and remediation on systems with multiple local users or elevated operational importance. Lack of KEV listing lowers urgency, but public exploit information increases remediation importance.
Technical view
CVE-2021-47790 is a CWE-428 unquoted service path issue in Pysoft Active WebCam 11.5. The CVSS 4.0 vector is local attack, low complexity, low privileges required, no user interaction, with high confidentiality, integrity, and availability impact to the vulnerable system.
Likely exposure
Exposure is limited to systems running Pysoft Active WebCam 11.5 as a Windows service with the vulnerable service path configuration. Risk is highest on shared workstations, kiosk-like systems, or servers where non-admin users can log in locally.
Exploitation context
The source bundle includes an Exploit-DB reference, indicating public exploit information exists. However, CISA KEV is false and no provided source states active exploitation in the wild. Successful exploitation requires local access and some existing user privileges.
Researcher notes
Evidence supports a local privilege-escalation condition in Active WebCam 11.5 only. The bundle does not identify other affected versions, a vendor patch, or active exploitation. Avoid broad product assumptions beyond Pysoft Active WebCam 11.5.
Mitigation direction
- Identify and inventory any installations of Pysoft Active WebCam 11.5.
- Check Pysoft or trusted distribution sources for vendor guidance or a fixed release.
- Remove Active WebCam if it is no longer required.
- Restrict local login access to systems running the affected software.
- Review service configuration and permissions with Windows hardening standards.
Validation and detection
- Confirm whether Active WebCam 11.5 is installed on Windows endpoints.
- Inspect the installed Windows service configuration for an unquoted executable path.
- Verify service directories are not writable by standard users.
- Check whether any newer vendor-supported version or guidance is available.
- Prioritize systems where non-admin users have local access.
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-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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-47790 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-50273CVE reference · exploit
- Software Download PageCVE reference · product
- Vendor HomepageCVE reference · product
- VulnCheck Advisory: Active WebCam 11.5 - 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.