Security readout for executives and security teams
Plain-English summary
Pingzapper 2.3.1 has a Windows service configuration flaw that may let a local low-privileged user gain higher privileges. This is most relevant on endpoints or servers where Pingzapper is installed and multiple users or untrusted code can run locally.
Executive priority
Prioritize remediation on shared workstations, developer machines, jump boxes, and any system where local compromise could lead to broader access. Treat as high severity, but not a remote-entry vulnerability based on the provided sources.
Technical view
CVE-2021-47886 is a CWE-428 unquoted service path issue in the PingzapperSvc service. The service path for PZService.exe under Program Files (x86) is not properly quoted, allowing local attackers to potentially place or trigger malicious executables and execute arbitrary code with elevated privileges.
Likely exposure
Exposure appears limited to Windows systems running Fyrolabs Pingzapper version 2.3.1 with the PingzapperSvc service installed. The provided sources do not identify other affected versions, default installation prevalence, or a vendor patch level.
Exploitation context
This is a local privilege escalation issue requiring local access or the ability to run code as a low-privileged user. An ExploitDB reference exists, but the source bundle does not show CISA KEV listing or confirmed active exploitation.
Researcher notes
The record cites CVSS 4.0 score 8.5 with AV:L/PR:L/UI:N and CWE-428. Evidence supports local privilege escalation in Pingzapper 2.3.1. Patch availability is not stated in the supplied sources, so remediation should be verified against vendor materials.
Mitigation direction
- Inventory systems for Pingzapper 2.3.1 and the PingzapperSvc service.
- Check vendor guidance and download pages for updated or corrected releases.
- Remove Pingzapper where it is not business-required.
- Restrict local interactive access on systems where Pingzapper remains installed.
- Monitor endpoints for suspicious service-related file creation or privilege escalation behavior.
Validation and detection
- Confirm whether Pingzapper 2.3.1 is installed on Windows assets.
- Review the PingzapperSvc executable path for proper quotation.
- Verify service directory permissions limit writes by non-administrative users.
- Check EDR or system logs for unusual process starts related to PingzapperSvc.
- Document patch, removal, or compensating-control status for each affected endpoint.
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-2021-47886 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-49626CVE reference · exploit
- Vendor HomepageCVE reference · product
- Software Download PageCVE reference · product
- VulnCheck Advisory: Pingzapper 2.3.1 - 'PingzapperSvc' 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.