High severity7.5NVD Advisory· Published Jan 28, 2022· Updated Jun 17, 2026
CVE-2021-22816
CVE-2021-22816
Description
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
Affected products
11- SCADAPack/SCADAPack RTUsdescription
- Range: <=V8.18.1
- cpe:2.3:o:schneider-electric:scadapack_312e_firmware:*:*:*:*:*:*:*:*Range: <8.19.1
- cpe:2.3:o:schneider-electric:scadapack_313e_firmware:*:*:*:*:*:*:*:*Range: <8.19.1
- cpe:2.3:o:schneider-electric:scadapack_314e_firmware:*:*:*:*:*:*:*:*Range: <8.19.1
- cpe:2.3:o:schneider-electric:scadapack_330e_firmware:*:*:*:*:*:*:*:*Range: <8.19.1
- cpe:2.3:o:schneider-electric:scadapack_333e_firmware:*:*:*:*:*:*:*:*Range: <8.19.1
- cpe:2.3:o:schneider-electric:scadapack_334e_firmware:*:*:*:*:*:*:*:*Range: <8.19.1
- cpe:2.3:o:schneider-electric:scadapack_337e_firmware:*:*:*:*:*:*:*:*Range: <8.19.1
- cpe:2.3:o:schneider-electric:scadapack_350e_firmware:*:*:*:*:*:*:*:*Range: <8.19.1
- cpe:2.3:o:schneider-electric:scadapack_357e_firmware:*:*:*:*:*:*:*:*Range: <8.19.1
Patches
Vulnerability mechanics
References
1- download.schneider-electric.com/filesnvdVendor Advisory
News mentions
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