CVE-2020-16233
No exploitation reported by the sources we read.
- Published2020-09-16
- Fixed in7.10
- WeaknessCWE-404
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
An attacker could send a specially crafted packet that could have CodeMeter (All versions prior to 7.10) send back packets containing data from the heap.
Timeline
dates in UTC- 2020-09-1620:15CVE 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-2020-16233?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-16233?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 |
|---|---|---|---|
| 7.10 | < 7.10 | 7.10 | 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
Wibu-Systems CodeMeter (Update F)
CodeMeter: All versions prior to 7.10a are affected by CVE-2020-14509 and CVE-2020-14519 · CodeMeter: All versions prior to 6.90 are affected by CVE-2020-14515 when using CmActLicense update files with CmActLicense Firm Code · CodeMeter: All versions prior to 7.10a are affected by CVE-2020-14517 · +2 more
Fix
- Update Wibu codemeter to 7.10
- Vendor fix CISA ICSA-20-203-01 · 5 productsWibu-Systems recommends the following:
- Vendor fix CISA ICSA-20-203-01 · 5 productsFor more information please see Wibu-Systems ' security advisories:
- Vendor fix CISA ICSA-20-203-01 · 5 productsFor more information on products dependent on the affected CodeMeter see the following vendor security advisories:
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
- NVDCVSS 3.17.5read 2026-10-23
- NVDCVSS 2.05read 2026-10-23
- CNAweakness (CWE)CWE-404read 2026-10-23
- FIRST EPSSEPSS score1.8 %2026-10-22
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Published
- 2020-09-16
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2020-16233?
Is CVE-2020-16233 actively exploited?
What is the CVSS score for CVE-2020-16233?
Running Wibu-Systems CodeMeter? 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.