CVE-2013-0662Modbus Serial Driver Out-of-Bounds Write
Multiple stack-based buffer overflows in ModbusDrv.exe in Schneider Electric Modbus Serial Driver 1.10 through 3.2 allow remote attackers to execute arbitrary code via a large buffer-size value in a Modbus Application Header.
Published Apr 1, 2014 · Updated May 6, 2026
Key Facts
Patch immediately- CVE-2013-0662 is a critical-severity vulnerability (CVSS 9.3 v2) affecting Concept (Schneider-Electric), Modbuscommdtm Sl (Schneider-Electric), Modbus Serial Driver (Schneider-Electric) and 9 more products.
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 22% probability of exploitation in the next 30 days.
- Fixed versions are available, including Concept 2.6, Modbuscommdtm Sl 2.1.2, Opc Factory Server 3.5.0.
- Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Scores
CVSS v2
9.3
AV:N/AC:M/Au:N/C:C/I:C/A:C
EPSS (30-day exploit likelihood)
22%
Higher than 97.6% of all scored CVEs
Exploit maturity
Proof of concept
ATLAS score
50/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Proof of concept
Public exploit code
4
Proof-of-concept links
In-the-wild evidence
0
Reports of active use
Advisories And Exploit References
Description
Multiple stack-based buffer overflows in ModbusDrv.exe in Schneider Electric Modbus Serial Driver 1.10 through 3.2 allow remote attackers to execute arbitrary code via a large buffer-size value in a Modbus Application Header.
Affected Products
21 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| ConceptSchneider-Electric | See advisory | 2.6 |
| Modbuscommdtm SlSchneider-Electric | See advisory | 2.1.2 |
| Modbus Serial DriverSchneider-Electric | 1.10, 2.2, 3.2 | n/a |
| Opc Factory ServerSchneider-Electric | 3.34, 3.35 | 3.5.0 |
| Pl7Schneider-Electric | See advisory | 4.5 |
Patched Releases
Concept
2.6
Modbuscommdtm Sl
2.1.2
Opc Factory Server
3.5.0
Pl7
4.5
Powersuite
2.6
Sft2841
14.0
Somachine
3.1
Somove
1.7
Twidosuite
2.31.04
Unity Pro
7.0
Unityloader
2.3
Timeline
Publicly disclosed
Apr 1, 2014
Last updated
May 6, 2026
Weakness Type
- CWE-787 Out-of-bounds Write
References
- advisorydownload.schneider-electric.com · files
- advisoryics-cert.us-cert.gov · ICSA-14-086-01
- advisory66500
- exploitExploitDB-45219
- exploit45219
FAQ
Common Questions.
Multiple stack-based buffer overflows in ModbusDrv.exe in Schneider Electric Modbus Serial Driver 1.10 through 3.2 allow remote attackers to execute arbitrary code via a large buffer-size value in a Modbus Application Header.
Affected: Concept (Schneider-Electric); Modbuscommdtm Sl (Schneider-Electric); Modbus Serial Driver (Schneider-Electric) versions 1.10, 2.2, 3.2, among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Concept 2.6, Modbuscommdtm Sl 2.1.2, Opc Factory Server 3.5.0.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Is CVE-2013-0662 On Your Attack Surface?
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