CVE-2021-32970
No exploitation reported by the sources we read.
- Published2022-04-01
- WeaknessCWE-20
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
Data can be copied without validation in the built-in web server in Moxa NPort IAW5000A-I/O series firmware version 2.2 or earlier, which may allow a remote attacker to cause denial-of-service conditions.
Timeline
dates in UTC- 2022-04-0123:15CVE 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-2021-32970?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-32970?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 |
|---|---|---|---|
| 2.2 | ≤ 2.2 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 2.2 | ≤ 2.2 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 2.2 | ≤ 2.2 | no fix published | NVD |
1 more product in the sources.
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
Moxa NPort IAW5000A-I/O Series Serial Device Server
NPort IAW5000A-I/O Series firmware: Version 2.2 or earlier
Fix
- Mitigation from the vendor CISA ICSA-21-187-01 · 1 productMoxa has developed solutions to address these vulnerabilities. Please contact Moxa Technical Support for a security patch.
- Mitigation from the vendor CISA ICSA-21-187-01 · 1 productMoxa has also published a security advisory to provide more information.
Advisories and patches
- www.cisa.govMitigation
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Published
- 2022-04-01
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2021-32970?
Is CVE-2021-32970 actively exploited?
What is the CVSS score for CVE-2021-32970?
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.