CVE-2021-22786
A CWE-200: Information Exposure vulnerability exists that could cause the exposure of sensitive...
A CWE-200: Information Exposure vulnerability exists that could cause the exposure of sensitive information stored on the memory of the controller when communicating over the Modbus TCP protocol. Affected Products: Modicon M340 CPU (part numbers BMXP34*) (Versions prior to V3.30), Modicon M580 CPU (part numbers BMEP* and BMEH*) (Versions prior to SV3.20), Modicon MC80 (BMKC80) (Versions prior to V1.6), Modicon M580 CPU Safety (part numbers BMEP58S and BMEH58S) (All Versions), Modicon Momentum MDI (171CBU*) (Versions prior to V2.3), Legacy Modicon Quantum (All Versions)
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
CVE List Score used
A CWE-200: Information Exposure vulnerability exists that could cause the exposure of sensitive information stored on the memory of the controller when communicating over the Modbus TCP protocol. Affected Products: Modicon M340 CPU (part numbers BMXP34*) (Versions prior to V3.30), Modicon M580 CPU (part numbers BMEP* and BMEH*) (Versions prior to SV3.20), Modicon MC80 (BMKC80) (Versions prior to V1.6), Modicon M580 CPU Safety (part numbers BMEP58S and BMEH58S) (All Versions), Modicon Momentum MDI (171CBU*) (Versions prior to V2.3), Legacy Modicon Quantum (All Versions)
- Record
CVE-2021-22786- 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-200
- Updated
- 2026-11-02
EUVDEUVD-2021-9921
A CWE-200: Information Exposure vulnerability exists that could cause the exposure of sensitive information stored on the memory of the controller when communicating over the Modbus TCP protocol. Affected Products: Modicon M340 CPU (part numbers BMXP34*) (Versions prior to V3.30), Modicon M580 CPU (part numbers BMEP* and BMEH*) (Versions prior to SV3.20), Modicon MC80 (BMKC80) (Versions prior to V1.6), Modicon M580 CPU Safety (part numbers BMEP58S and BMEH58S) (All Versions), Modicon Momentum MDI (171CBU*) (Versions prior to V2.3), Legacy Modicon Quantum (All Versions)
- Record
EUVD-2021-9921- 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 - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-c8j6-69w9-74h6
A CWE-200: Information Exposure vulnerability exists that could cause the exposure of sensitive...
A CWE-200: Information Exposure vulnerability exists that could cause the exposure of sensitive information stored on the memory of the controller when communicating over the Modbus TCP protocol. Affected Products: Modicon M340 CPU (part numbers BMXP34*) (Versions prior to V3.30), Modicon M580 CPU (part numbers BMEP* and BMEH*) (Versions prior to SV3.20), Modicon MC80 (BMKC80) (Versions prior to V1.6), Modicon M580 CPU Safety (part numbers BMEP58S and BMEH58S) (All Versions), Modicon Momentum MDI (171CBU*) (Versions prior to V2.3), Legacy Modicon Quantum (All Versions)
- Record
GHSA-c8j6-69w9-74h6- 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-200
- Updated
- 2026-11-02
NVD
A CWE-200: Information Exposure vulnerability exists that could cause the exposure of sensitive information stored on the memory of the controller when communicating over the Modbus TCP protocol. Affected Products: Modicon M340 CPU (part numbers BMXP34*) (Versions prior to V3.30), Modicon M580 CPU (part numbers BMEP* and BMEH*) (Versions prior to SV3.20), Modicon MC80 (BMKC80) (Versions prior to V1.6), Modicon M580 CPU Safety (part numbers BMEP58S and BMEH58S) (All Versions), Modicon Momentum MDI (171CBU*) (Versions prior to V2.3), Legacy Modicon Quantum (All Versions)
- Record
CVE-2021-22786- 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-200
- Updated
- 2026-11-02
Affected products
- schneider electric legacy modicon quantum
- schneider electric modicon m340 cpu (part numbers bmxp34*)
- schneider electric modicon m580 cpu (part numbers bmep* and bmeh*)
- schneider electric modicon m580 cpu safety (part numbers bmep58*s and bmeh58*s)
- schneider electric modicon mc80 (bmkc80)
- schneider electric modicon momentum cpu (171cbu*)
- schneider-electric modicon m340 bmxp341000 firmware
- schneider-electric modicon m340 bmxp342000 firmware
- schneider-electric modicon m340 bmxp3420102 firmware
- schneider-electric modicon m340 bmxp342010 firmware
- schneider-electric modicon m340 bmxp342020 firmware
- schneider-electric modicon m340 bmxp342020h firmware
Show 35 moreShow less
- schneider-electric modicon m340 bmxp3420302 firmware
- schneider-electric modicon m340 bmxp3420302h firmware
- schneider-electric modicon m340 bmxp342030 firmware
- schneider-electric modicon m340 bmxp342030h firmware
- schneider-electric modicon m580 bmeh582040 firmware
- schneider-electric modicon m580 bmeh582040c firmware
- schneider-electric modicon m580 bmeh582040s firmware
- schneider-electric modicon m580 bmeh584040 firmware
- schneider-electric modicon m580 bmeh584040c firmware
- schneider-electric modicon m580 bmeh584040s firmware
- schneider-electric modicon m580 bmeh586040 firmware
- schneider-electric modicon m580 bmeh586040c firmware
- schneider-electric modicon m580 bmeh586040s firmware
- schneider-electric modicon m580 bmep581020 firmware
- schneider-electric modicon m580 bmep581020h firmware
- schneider-electric modicon m580 bmep582020 firmware
- schneider-electric modicon m580 bmep582020h firmware
- schneider-electric modicon m580 bmep582040 firmware
- schneider-electric modicon m580 bmep582040h firmware
- schneider-electric modicon m580 bmep582040s firmware
- schneider-electric modicon m580 bmep583020 firmware
- schneider-electric modicon m580 bmep583040 firmware
- schneider-electric modicon m580 bmep584020 firmware
- schneider-electric modicon m580 bmep584040 firmware
- schneider-electric modicon m580 bmep584040s firmware
- schneider-electric modicon m580 bmep585040 firmware
- schneider-electric modicon m580 bmep585040c firmware
- schneider-electric modicon m580 bmep586040 firmware
- schneider-electric modicon m580 bmep586040c firmware
- schneider-electric modicon mc80 bmkc8020301 firmware
- schneider-electric modicon mc80 bmkc8020310 firmware
- schneider-electric modicon mc80 bmkc8030311 firmware
- schneider-electric modicon momentum 171cbu78090 firmware
- schneider-electric modicon momentum 171cbu98090 firmware
- schneider-electric modicon momentum 171cbu98091 firmware
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-22786 is a high vulnerability (CVSS 7.5) in Schneider Electric Legacy Modicon Quantum, published February 1, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.65%, the 51st percentile. No source names a fixed version.