CVE-2020-12022
No exploitation reported by the sources we read.
- Published2020-05-08
- WeaknessCWE-129
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. An improper validation vulnerability exists that could allow an attacker to inject specially crafted input into memory where it can be executed.
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-2020-12022?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-12022?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-129read 2026-10-23
- NVDweakness (CWE)CWE-129read 2026-10-23
- FIRST EPSSEPSS score1.7 %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-2020-12022?
Is CVE-2020-12022 actively exploited?
What is the CVSS score for CVE-2020-12022?
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.