Security readout for executives and security teams
Plain-English summary
CVE-2022-50917 is a local privilege escalation issue in ProtonVPN 1.26.0. A logged-in attacker could abuse an unquoted Windows service path in the WireGuard service configuration to run code with elevated privileges when the service starts. This is not a remote internet attack, but it can worsen a workstation compromise.
Executive priority
Treat as a high-priority endpoint hardening issue, not a perimeter emergency. It can help an attacker turn limited local access into elevated control on affected machines. Prioritize systems used by administrators, developers, or high-value staff, and confirm whether ProtonVPN 1.26.0 is present.
Technical view
The issue is CWE-428, unquoted search path or element, in ProtonVPN 1.26.0 WireGuard service configuration. The supplied CVSS v4 score is 8.5, with local attack vector, low complexity, low privileges required, and no user interaction. Sources describe potential arbitrary code execution through service startup path resolution.
Likely exposure
Exposure is limited to systems running ProtonVPN 1.26.0, apparently on Windows where service path parsing applies. The provided sources do not list other affected versions or platforms. Organizations should validate installed ProtonVPN versions through endpoint inventory rather than assuming broader exposure.
Exploitation context
CISA KEV is false in the provided data, so active exploitation is not established here. A public Exploit-DB reference exists, which increases researcher and attacker awareness. Exploitation requires local access and low privileges, making this most relevant after phishing, malware foothold, or insider access.
Researcher notes
Evidence supports a local privilege escalation in ProtonVPN 1.26.0 only. The source bundle names Exploit-DB and VulnCheck references but does not provide a vendor advisory or fixed version. Avoid broad version claims until vendor or CVE data expands affected-version details.
Mitigation direction
- Identify endpoints running ProtonVPN 1.26.0.
- Check ProtonVPN or vendor guidance for fixed versions or supported remediation.
- Upgrade or remediate affected installations when vendor-supported guidance is available.
- Limit local user write permissions around application and service-related directories.
- Prioritize remediation on shared workstations, developer systems, and privileged-user endpoints.
Validation and detection
- Inventory ProtonVPN versions across managed endpoints.
- Confirm whether ProtonVPN 1.26.0 is installed on Windows systems.
- Review the WireGuard service configuration for an unquoted executable path.
- After remediation, verify the service path is safely configured.
- Review endpoint telemetry for unexpected executable placement near ProtonVPN service paths.
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-2022-50917 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-50837CVE reference · exploit
- ProtonVPN Official WebsiteCVE reference · product
- VulnCheck Advisory: ProtonVPN 1.26.0 - 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.