CVE-2022-33138
No exploitation reported by the sources we read.
- Published2022-07-12
- Fixed in3.3
- WeaknessCWE-306
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
A vulnerability has been identified in SIMATIC MV540 H (All versions < V3.3), SIMATIC MV540 S (All versions < V3.3), SIMATIC MV550 H (All versions < V3.3), SIMATIC MV550 S (All versions < V3.3), SIMATIC MV560 U (All versions < V3.3), SIMATIC MV560 X (All versions < V3.3). Affected devices do not perform authentication for several web API endpoints. This could allow an unauthenticated remote attacker to read and download data from the device.
Timeline
dates in UTC- 2022-07-1210:15CVE 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-2022-33138?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-33138?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 |
|---|---|---|---|
| 3.3 | < 3.3 | 3.3 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 3.3 | < 3.3 | 3.3 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 3.3 | < 3.3 | 3.3 | NVD |
3 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
Siemens SIMATIC MV500 Devices
SIMATIC MV540 H · SIMATIC MV540 S · SIMATIC MV550 H · +3 more
Fix
- Update Siemens simatic mv540 h firmware to 3.3
- Vendor fix CISA ICSA-22-195-03 · 6 productsUpdate to V3.3 or later version
Advisories and patches
- cert-portal.siemens.comPatch · 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
- NVDCVSS 3.17.5read 2026-10-23
- NVDCVSS 2.05read 2026-10-23
- CNAweakness (CWE)CWE-306read 2026-10-23
- NVDweakness (CWE)CWE-306read 2026-10-23
- FIRST EPSSEPSS score1.3 %2026-10-23
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
- 2022-07-12
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2022-33138?
Is CVE-2022-33138 actively exploited?
What is the CVSS score for CVE-2022-33138?
Running SIMATIC MV540 H (All versions <? Hear about its next vulnerability
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Go further
- Following what attackers exploit right now? The CISA KEV additions of the month, with their patch deadlines.
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.