A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists that…
Priority LOW 35CWE-754Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists that could cause a Denial of Service of the RTU when receiving a specially crafted request over Modbus, and the RTU is configured as a Modbus server. Affected Products: SCADAPack 312E, 313E, 314E, 330E, 333E, 334E, 337E, 350E and 357E RTUs with firmware V8.18.1 and prior
Why it matters now
EPSS 0.00947 61st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 18
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:schneider-electric:scadapack_312e_firmware:*:*:*:*:*:*:*:* | before 8.19.1 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:scadapack_312e:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:scadapack_313e_firmware:*:*:*:*:*:*:*:* | before 8.19.1 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:scadapack_313e:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:scadapack_314e_firmware:*:*:*:*:*:*:*:* | before 8.19.1 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:scadapack_314e:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:scadapack_330e_firmware:*:*:*:*:*:*:*:* | before 8.19.1 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:scadapack_330e:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:scadapack_333e_firmware:*:*:*:*:*:*:*:* | before 8.19.1 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:scadapack_333e:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
- cpe:2.3:o:schneider-electric:scadapack_312e_firmware:*:*:*:*:*:*:*:* Versions before 8.19.1 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:scadapack_312e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:scadapack_313e_firmware:*:*:*:*:*:*:*:* Versions before 8.19.1 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:scadapack_313e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:scadapack_314e_firmware:*:*:*:*:*:*:*:* Versions before 8.19.1 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:scadapack_314e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:scadapack_330e_firmware:*:*:*:*:*:*:*:* Versions before 8.19.1 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:scadapack_330e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:scadapack_333e_firmware:*:*:*:*:*:*:*:* Versions before 8.19.1 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:scadapack_333e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
Show 8 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:schneider-electric:scadapack_334e_firmware:*:*:*:*:*:*:*:* | before 8.19.1 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:scadapack_334e:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:scadapack_337e_firmware:*:*:*:*:*:*:*:* | before 8.19.1 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:scadapack_337e:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:scadapack_350e_firmware:*:*:*:*:*:*:*:* | before 8.19.1 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:scadapack_350e:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:scadapack_357e_firmware:*:*:*:*:*:*:*:* | before 8.19.1 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:scadapack_357e:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
- cpe:2.3:o:schneider-electric:scadapack_334e_firmware:*:*:*:*:*:*:*:* Versions before 8.19.1 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:scadapack_334e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:scadapack_337e_firmware:*:*:*:*:*:*:*:* Versions before 8.19.1 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:scadapack_337e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:scadapack_350e_firmware:*:*:*:*:*:*:*:* Versions before 8.19.1 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:scadapack_350e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:scadapack_357e_firmware:*:*:*:*:*:*:*:* Versions before 8.19.1 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:scadapack_357e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-22816
- 2026-10-03 Alias added: GHSA-x4x8-fc23-7gg9
References
Sources
- CVE-2021-22816 · CVE Program
- CVE-2021-22816 · NVD
- FIRST EPSS
- GHSA-x4x8-fc23-7gg9 · 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