IObit Malware Fighter 4.3.1 Unquoted Service Path Privilege Escalation
Published Apr 4, 2026
8.5
HIGHCVSS 4.0
EPSS 0.18%
Description
IObit Malware Fighter 4.3.1 contains an unquoted service path vulnerability in the IMFservice and LiveUpdateSvc services that allows local attackers to escalate privileges. Attackers can insert a malicious executable file in the unquoted service path and trigger privilege escalation when the service restarts or the system reboots, executing code with LocalSystem privileges.
Affected products
-
- Version 4.3.1StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Iobit | IObit Malware Fighter | n/a |
|
- ≤ 4.3.1
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
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
1 other source (NVD) ▾
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed Apr 6, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Apr–Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.18% (0.00176) | 6.49th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.18% (0.00176) | 7.34th | v5 (v2026.06.15) |
| Apr 5, 2026 | 0.01% (0.00012) | 1.67th | v4 (v2025.03.14) |
References (4)
- http://www.iobit.com/downloadcenter.php?product=malware-fighter-free product
- http://www.iobit.com/en/index.php product
- https://www.exploit-db.com/exploits/40525 exploitVDB Entry
- https://www.vulncheck.com/advisories/iobit-malware-fighter-unquoted-service-path-privilege-escalation third-party-advisoryThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.iobit.com/downloadcenter.php?product=malware-fighter-free | product | |
| http://www.iobit.com/en/index.php | product | |
| https://www.exploit-db.com/exploits/40525 | exploitVDB Entry | |
| https://www.vulncheck.com/advisories/iobit-malware-fighter-unquoted-service-path-privilege-escalation | third-party-advisoryThird Party Advisory |
Change history (0)
No recorded changes yet.