CVE-2021-27442
No exploitation reported by the sources we read.
- Published2022-05-16
- Fixed in20210302
- WeaknessCWE-79
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
The Weintek cMT product line is vulnerable to a cross-site scripting vulnerability, which could allow an unauthenticated remote attacker to inject malicious JavaScript code.
Timeline
dates in UTC- 2022-05-1618:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-27442?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-27442?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 |
|---|---|---|---|
| 20210302.x | < 20210302 | 20210302 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 20210208.x | < 20210208 | 20210208 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 20210209.x | < 20210209 | 20210209 | NVD |
13 more products 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
Weintek EasyWeb cMT
cMT-CTRL01: versions prior to 20210302 · cMT-SVR-1xx/2xx: versions prior to 20210305 · cMT-G01/G02: versions prior to 20210209 · +4 more
Fix
- Update Weintek cmt-ctrl01 firmware to 20210302
- Mitigation from the vendor CISA ICSA-21-082-01 · 7 productsWeintek has released OS upgrades for the affected products. Refer to Weintek's Technical Notice regarding these vulnerabilities.
Advisories and patches
- dl.weintek.comMitigation · Vendor Advisory
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:R/S:C/C:L/I:L/A:N
- Published
- 2022-05-16
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2021-27442?
Is CVE-2021-27442 actively exploited?
What is the CVSS score for CVE-2021-27442?
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.