Security readout for executives and security teams
Plain-English summary
CVE-2020-36992 is a local privilege escalation issue in NordVPN 6.31.13.0 on Windows. A user with local access could abuse an improperly quoted service path to run code with higher privileges during service startup or reboot. This matters most on shared workstations, kiosks, or endpoints where untrusted users can log in.
Executive priority
Treat as a high-priority endpoint hardening issue where NordVPN 6.31.13.0 is deployed. It is not described as remotely exploitable, but it can turn a low-privileged local foothold into full system control.
Technical view
The NordVPN 'nordvpn-service' in version 6.31.13.0 is affected by CWE-428, an unquoted service path. The source bundle rates it high with CVSS 4.0 score 8.5. Exploitation requires local, low-privileged access and can potentially execute code as LocalSystem when Windows resolves the unquoted binary path.
Likely exposure
Exposure is limited to systems running NordVPN 6.31.13.0 with the vulnerable service configuration. Risk is higher where standard users have local access and can write to relevant path locations. The provided sources do not identify other affected versions.
Exploitation context
A public ExploitDB reference exists, but the source bundle does not show CISA KEV listing or confirmed active exploitation. Abuse requires local access, not remote network access. Successful exploitation may occur during service start, system startup, or reboot.
Researcher notes
Evidence supports CWE-428 local privilege escalation in NordVPN 6.31.13.0. The bundle includes a public exploit reference, but no KEV status and no vendor-specific fixed version. Avoid expanding affected versions without vendor confirmation.
Mitigation direction
- Identify and prioritize systems running NordVPN 6.31.13.0.
- Check NordVPN or vendor guidance for fixed versions or supported remediation.
- Replace affected installations with a vendor-supported release if guidance confirms remediation.
- Restrict local user write access to sensitive system and application paths.
- Monitor endpoint alerts for suspicious execution during startup or service restart.
Validation and detection
- Inventory endpoints for NordVPN version 6.31.13.0.
- Review the nordvpn-service configuration for an unquoted path containing spaces.
- Confirm the service privilege context and startup behavior.
- Check whether local users can write to path segments involved.
- Review endpoint telemetry around reboot or service startup for unexpected binaries.
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
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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-2020-36992 mapping review
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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-48790CVE reference · exploit
- NordVPN Official HomepageCVE reference · product
- VulnCheck Advisory: Nord VPN-6.31.13.0 - 'nordvpn-service' 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.