CVE-2020-12002
No exploitation reported by the sources we read.
- Published2020-05-08
- WeaknessCWE-121 · CWE-787
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
Advantech WebAccess Node, Version 8.4.4 and prior, Version 9.0.0. Multiple stack-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.
Timeline
dates in UTC- 2020-05-0812:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-12002?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-12002?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 8.4 | ≤ 8.4.4 | no fix published | NVD |
| 9.0 | = 9.0.0 | no fix published | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Vendor advisories
Advantech WebAccess Node
WebAccess Node: Version 9.0.0 · WebAccess Node: Version 8.4.4 and prior
Fix
- Mitigation from the vendor CISA ICSA-20-128-01 · 2 productsAdvantech has released WebAccessNode Version 8.4.4.P0320844 to address the reported vulnerabilities for users currently using WebAccessNode Version 8.4.4
- Mitigation from the vendor CISA ICSA-20-128-01 · 2 productsAdvantech has released WebAccessNode Version 9.0.0.P0320900 to address the reported vulnerabilities for users currently using WebAccessNode Version 9.0.0
- Mitigation from the vendor CISA ICSA-20-128-01 · 2 productsNote: Upon installation, there is a step to let the user decide whether to define a password code for RPC calls. If the user leaves this blank, the installation will pop up a warning to the user for potential risks that they are willing to take.
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
- NVDCVSS 3.19.8read 2026-10-23
- NVDCVSS 2.07.5read 2026-10-23
- CNAweakness (CWE)CWE-121read 2026-10-23
- NVDweakness (CWE)CWE-787read 2026-10-23
- FIRST EPSSEPSS score9.1 %2026-10-22
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- 2020-05-08
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2020-12002?
Is CVE-2020-12002 actively exploited?
What is the CVSS score for CVE-2020-12002?
Running Advantech WebAccess Node? Hear about its next vulnerability
Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.