CVE-2026-43839
Summary
| CVE | CVE-2026-43839 |
|---|---|
| State | PUBLISHED |
| Assigner | CSA |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-20 09:17:10 UTC |
| Updated | 2026-10-20 19:30:59 UTC |
| Description | A NULL pointer dereference vulnerability in the logs management functionality could allow an unauthenticated attacker to crash the service. |
Risk And Classification
Primary CVSS: v4.0 8.7 HIGH from 5f57b9bf-260d-4433-bf07-b6a79e9bb7d4
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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
EPSS: 0.002740000 probability, percentile 0.186440000 (date 2026-10-20)
Problem Types: CWE-476 | CWE-476 CWE-476 NULL Pointer Dereference
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | 5f57b9bf-260d-4433-bf07-b6a79e9bb7d4 | Secondary | 8.7 | HIGH | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/C... |
| 4.0 | CNA | CVSS | 8.7 | HIGH | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
CVSS v4.0 Breakdown
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-149 | 5f57b9bf-260d-4433-bf07-b6a79e9bb7d4 | www.csa.gov.sg | |
| www.advantech.com/en/security-advisory | 5f57b9bf-260d-4433-bf07-b6a79e9bb7d4 | www.advantech.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Simone Bossi and Raffaele Bova at Nozomi Networks (en)
Additional Advisory Data
Solutions
CNA: Advantech has released a security update to address these vulnerabilities. Users and administrators of affected product versions are advised to update to the latest version immediately.