Home/CVE/Advantech WebAccess Node, Version 8.4.4 and prior, Version 9.0.0. Multiple heap-based buffer overflow vulnerabilities ex
CVE

CVE-2020-10638

Advantech WebAccess Node, Version 8.4.4 and prior, Version 9.0.0. Multiple heap-based buffer overflow vulnerabilities ex

Advantech WebAccess Node, Version 8.4.4 and prior, Version 9.0.0. Multiple heap-based buffer overflow vulnerabilities exist caused by a lack of proper validation of the length of user-supplied data, which may allow remote code execution.

CRITICAL · CVSS 9.8 EPSS 0.26718
Schedule remediation
  • EPSS ≥ 0.10 - elevated exploitation probability
  • EPSS percentile: top 4% of all CVEs by exploitation likelihood
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-122Heap-based Buffer Overflow
CWE-787Out-of-bounds Write
▤

Affected Products & Versions

2
advantech webaccess<= 8.4.4
advantech webaccessall versions
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · ics-cert@hq.dhs.gov
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD08 May 2020 · 12:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

1
cisa-csafcisa-csaf-csaf_files-OT-white-2020-icsa-20-128-01
🔗

References & Sources

7
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.us-cert.gov/ics/advisories/icsa-20-128-01Third Party AdvisoryUS Government Resource
https://www.zerodayinitiative.com/advisories/ZDI-20-593/Third Party AdvisoryVDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-20-599/Third Party AdvisoryVDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-20-600/Third Party AdvisoryVDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-20-603/Third Party AdvisoryVDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-20-616/Third Party AdvisoryVDB Entry
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