CWE-924: Improper Enforcement of Message Integrity During Transmission in a Communication…
Priority LOW 35CWE-924Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Active
- Attack complexity
- High
- Attack requirements
- Present
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
CWE-924: Improper Enforcement of Message Integrity During Transmission in a Communication Channel vulnerability exists that could cause retrieval of password hash that could lead to denial of service and loss of confidentiality and integrity of controllers. To be successful, the attacker needs to inject themself inside the logical network while a valid user uploads or downloads a project file into the controller.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00304 23rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Schneider Electric | Modicon M340 CPU (part numbers BMXP34*) | All versions | — | No fix listed | CNA |
| Schneider Electric | Modicon MC80 (part numbers BMKC80) | All versions | — | No fix listed | CNA |
| Schneider Electric | Modicon Momentum Unity M1E Processor (171CBU*) | All Versions | — | No fix listed | CNA |
- Modicon M340 CPU (part numbers BMXP34*) VendorSchneider Electric Affected All versions Fixed in — No fix listed CNA
- Modicon MC80 (part numbers BMKC80) VendorSchneider Electric Affected All versions Fixed in — No fix listed CNA
- Modicon Momentum Unity M1E Processor (171CBU*) VendorSchneider Electric Affected All Versions Fixed in — No fix listed CNA
CPE names CISA-ADP · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:h:schneider-electric:modicon_m340:-:*:*:*:*:*:*:* | not specified by CISA-ADP | — | Schneider Electric |
| cpe:2.3:h:schneider-electric:modicon_mc80:-:*:*:*:*:*:*:* | not specified by CISA-ADP | — | Schneider Electric |
| cpe:2.3:h:schneider-electric:modicon_momentum_unity_m1e_processor:-:*:*:*:*:*:*:* | not specified by CISA-ADP | — | Schneider Electric |
- cpe:2.3:h:schneider-electric:modicon_m340:-:*:*:*:*:*:*:* Versions not specified by CISA-ADP — ·Schneider Electric
- cpe:2.3:h:schneider-electric:modicon_mc80:-:*:*:*:*:*:*:* Versions not specified by CISA-ADP — ·Schneider Electric
- cpe:2.3:h:schneider-electric:modicon_momentum_unity_m1e_processor:-:*:*:*:*:*:*:* Versions not specified by CISA-ADP — ·Schneider Electric
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2024-8933
- 2026-10-03 Alias added: GHSA-w33h-3r53-4xwj
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- TI-2023-04970 Path traversal in Schneider Electric C-Bus Toolkit CVSS 3.1CRITICAL 9.8
- TI-2019-04862 Improper handling of exceptional conditions in Schneider Electric Modicon M580 CVSS 3.1HIGH 7.5
- TI-2018-05690 Improper handling of exceptional conditions in Modicon M580 Modicon M340 Modicon Quantum… CVSS 3.1HIGH 7.5
Sources
- CVE-2024-8933 · CVE Program
- CVE-2024-8933 · NVD
- FIRST EPSS
- GHSA-w33h-3r53-4xwj · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences