Vulnerability Details : CVE-2021-22788
A CWE-787: Out-of-bounds Write vulnerability exists that could cause denial of service when an attacker sends a specially crafted HTTP request to the web server of the device. Affected Product: Modicon M340 CPUs: BMXP34 (Versions prior to V3.40), Modicon M340 X80 Ethernet Communication Modules: BMXNOE0100 (H), BMXNOE0110 (H), BMXNOC0401, BMXNOR0200H RTU (All Versions), Modicon Premium Processors with integrated Ethernet (Copro): TSXP574634, TSXP575634, TSXP576634 (All Versions), Modicon Quantum Processors with Integrated Ethernet (Copro): 140CPU65xxxxx (All Versions), Modicon Quantum Communication Modules: 140NOE771x1, 140NOC78x00, 140NOC77101 (All Versions), Modicon Premium Communication Modules: TSXETY4103, TSXETY5103 (All Versions)
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2021-22788
- cpe:2.3:o:schneider-electric:140cpu65150_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:schneider-electric:bmxp342020_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:schneider-electric:bmxnoc0401_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:schneider-electric:bmxnoe0100_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:schneider-electric:bmxnoe0110_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:schneider-electric:tsxp574634_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:schneider-electric:tsxp575634_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:schneider-electric:tsxp576634_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:schneider-electric:tsxety4103_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:schneider-electric:tsxety5103_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:schneider-electric:140noc77101_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:schneider-electric:bmxnor0200h_rtu_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:schneider-electric:140noe771x1_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:schneider-electric:140noc78x00_firmware:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-22788
0.16%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 53 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-22788
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2021-22788
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by:
- cybersecurity@se.com (Secondary)
- nvd@nist.gov (Primary)
References for CVE-2021-22788
-
https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-257-02
Patch;Vendor Advisory
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