Malwarebytes 4.5 Unquoted Service Path Privilege Escalation
Priority HIGH 72CWE-428Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-428.
Summary
Malwarebytes 4.5 contains an unquoted service path vulnerability in the MBAMService executable that allows local attackers to escalate privileges by injecting malicious code into the system root path. Attackers can place executable files in unquoted path directories that execute with LocalSystem privileges during service startup or system reboot.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00225 13th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Malwarebytes | Malwarebytes | 4.5.0 | — | No fix listed | CNA |
- Malwarebytes VendorMalwarebytes Affected 4.5.0 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:malwarebytes:malwarebytes:*:*:*:*:*:windows:*:* | up to 4.5.0 | Vulnerable | Malwarebytes |
- cpe:2.3:a:malwarebytes:malwarebytes:*:*:*:*:*:windows:*:* Versions up to 4.5.0 Vulnerable ·Malwarebytes
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2022-50971
- 2026-10-03 Alias added: GHSA-h259-67jx-3q85
References
Exploit 1
More Malwarebytes vulnerabilities
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- TI-2018-03823 In Malwarebytes Premium 3.3.1.2183, the driver file (FARFLT.SYS) allows local users to… CVSS 3.1HIGH 7.8
- TI-2018-03831 In Malwarebytes Premium 3.3.1.2183, the driver file (FARFLT.SYS) allows local users to… CVSS 3.1LOW 3.3
- TI-2023-11316 In Malwarebytes before 4.5.23, a symbolic link may be used delete any arbitrary file on… CVSS 3.1HIGH 7.8
- TI-2023-13578 The Malwarebytes EDR 1.0.11 for Linux driver doesn't properly ensure whitelisting of… CVSS 3.1HIGH 7.8
- TI-2018-03830 In Malwarebytes Premium 3.3.1.2183, the driver file (FARFLT.SYS) allows local users to… CVSS 3.0HIGH 7.8
Sources
- CVE-2022-50971 · CVE Program
- CVE-2022-50971 · NVD
- FIRST EPSS
- GHSA-h259-67jx-3q85 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences