CVE-2022-33138
A vulnerability has been identified in SIMATIC MV540 H (All versions < V3.3), SIMATIC MV540 S ...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2022-33138- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-306
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2022-33138- Weakness
- CWE-306
- Updated
- 2026-11-02
EUVDEUVD-2022-36189 No score
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.
- Record
EUVD-2022-36189- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-c482-89c3-ccmp
A vulnerability has been identified in SIMATIC MV540 H (All versions < V3.3), SIMATIC MV540 S ...
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.
- Record
GHSA-c482-89c3-ccmp- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-306
- Updated
- 2026-11-02
Affected products
- siemens simatic mv540 h
- siemens simatic mv540 s
- siemens simatic mv550 h
- siemens simatic mv550 s
- siemens simatic mv560 u
- siemens simatic mv560 x
- siemens simatic mv540 h firmware
- siemens simatic mv540 s firmware
- siemens simatic mv550 h firmware
- siemens simatic mv550 s firmware
- siemens simatic mv560 u firmware
- siemens simatic mv560 x firmware
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2022-33138 is a high vulnerability (CVSS 7.5) in Siemens Simatic Mv540 H, published July 12, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.35%, the 71st percentile. No source names a fixed version.