CVE-2020-7562
A CWE-125: Out-of-Bounds Read vulnerability exists in the Web Server on Modicon M340, Modicon...
A CWE-125: Out-of-Bounds Read vulnerability exists in the Web Server on Modicon M340, Modicon Quantum and Modicon Premium Legacy offers and their Communication Modules (see notification for details) which could cause a segmentation fault or a buffer overflow when uploading a specially crafted file on the controller over FTP.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
A CWE-125: Out-of-Bounds Read vulnerability exists in the Web Server on Modicon M340, Modicon Quantum and Modicon Premium Legacy offers and their Communication Modules (see notification for details) which could cause a segmentation fault or a buffer overflow when uploading a specially crafted file on the controller over FTP.
- Record
CVE-2020-7562- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H - CVSS 3.1
- 6.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:H - CVSS 2.0
- 5.8 Medium
AV:N/AC:M/Au:N/C:P/I:N/A:P - Weakness
- CWE-125
- Updated
- 2026-11-02
CVE List
A CWE-125: Out-of-Bounds Read vulnerability exists in the Web Server on Modicon M340, Modicon Quantum and Modicon Premium Legacy offers and their Communication Modules (see notification for details) which could cause a segmentation fault or a buffer overflow when uploading a specially crafted file on the controller over FTP.
- Record
CVE-2020-7562- CVSS 3.1
- 6.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:H - Weakness
- CWE-125
- Updated
- 2026-11-02
EUVDEUVD-2020-28687
A CWE-125: Out-of-Bounds Read vulnerability exists in the Web Server on Modicon M340, Modicon Quantum and Modicon Premium Legacy offers and their Communication Modules (see notification for details) which could cause a segmentation fault or a buffer overflow when uploading a specially crafted file on the controller over FTP.
- Record
EUVD-2020-28687- CVSS 3.1
- 6.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-jhf7-x7rx-7fc9
A CWE-125: Out-of-Bounds Read vulnerability exists in the Web Server on Modicon M340, Modicon...
A CWE-125: Out-of-Bounds Read vulnerability exists in the Web Server on Modicon M340, Modicon Quantum and Modicon Premium Legacy offers and their Communication Modules (see notification for details) which could cause a segmentation fault or a buffer overflow when uploading a specially crafted file on the controller over FTP.
- Record
GHSA-jhf7-x7rx-7fc9- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H - Weakness
- CWE-125
- Updated
- 2026-11-02
Affected products
- schneider-electric modicon m340 bmx noc 0401 firmware
- schneider-electric modicon m340 bmx noe 0100 firmware
- schneider-electric modicon m340 bmx noe 0100h firmware
- schneider-electric modicon m340 bmx noe 0110 firmware
- schneider-electric modicon m340 bmx noe 0110h firmware
- schneider-electric modicon m340 bmx nor 0200h firmware
- schneider-electric modicon m340 bmx p34-2010 firmware
- schneider-electric modicon m340 bmx p34-2030 firmware
- schneider-electric modicon quantum 140cpu65150 firmware
- schneider-electric modicon quantum 140cpu65150c firmware
- schneider-electric modicon quantum 140cpu65160 firmware
- schneider-electric modicon quantum 140cpu65160c firmware
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- schneider-electric modicon quantum 140noc78100 firmware
- schneider-electric modicon quantum 140noe77101 firmware
- schneider-electric modicon quantum 140noe77111 firmware
- schneider-electric modicon tsxety4103 firmware
- schneider-electric modicon tsxety5103 firmware
- schneider-electric modicon tsxp574634 firmware
- schneider-electric modicon tsxp575634 firmware
- schneider-electric modicon tsxp576634 firmware
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-7562 is a high vulnerability (CVSS 8.1) in Schneider-electric Modicon M340 Bmx Noc 0401 Firmware, published November 18, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.91%, the 60th percentile. No source names a fixed version.