01 Record
CVE-2026-43837
A buffer overflow vulnerability in the password verification functionality could allow an attacker with guest authentication to achieve code execution.
HighPUBLISHEDCNA: CSA
CNA base score7.5 CVSS v4.0CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
02 Description
A buffer overflow vulnerability in the password verification functionality could allow an attacker with guest authentication to achieve code execution.
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 0.43% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 36.9% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (CVSS v4.0), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:4.0/AV:N/AC:H/AT:N/PR:H/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
- NVD analysis status
- Deferred. NVD last modified this record on 2026-10-20.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-10-20 08:14Z9 DAYS AGO
- Last updated
- 2026-10-20 15:57Z9 DAYS AGO
- Reserved
- 2026-05-04
- Assigning CNA
- CSA
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.5)
- CNA CVSS vector
- CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- Weaknesses
- CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base
- Data version
- 5.2
- Document digest
- 3cf609f0025ead6b922f4b16ce69ea6b825f5ae8c746d2c32f4ad2e8ef705326
05 Affected products
VendorProductVersionsPlatforms
06 References
- www.csa.gov.sghttps://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-149
- www.advantech.comhttps://www.advantech.com/en/security-advisory
07 Remediation
Simone Bossi and Raffaele Bova at Nozomi NetworksAdvantech 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.