CRITICAL
CVE-2011-3143
CWE-399Published: August 16, 2011· Updated: Jun 16, 2026
10.0
CVSS v3.1
Official Description
Use-after-free vulnerability in Control Microsystems ClearSCADA 2005, 2007, and 2009 before R2.3 and R1.4, as used in SCX before 67 R4.5 and 68 R3.9, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unspecified long strings that trigger heap memory corruption.
Technical Analysis
CVE-2011-3143 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityC
IntegrityC
AvailabilityC
AV:N/AC:L/Au:N/C:C/I:C/A:C
Affected Vendors & Products
aveva1 product(s)
clearscada
schneider-electric2 product(s)
scx 67scx 68
Source: NVD CPE · 5 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (12)
→
http://secunia.com/advisories/44955Third Party Advisory
→
http://www.digitalbond.com/scadapedia/vulnerability-notes/heap-overflow-vulnerability/Broken Link · Third Party Advisory
→
http://www.osvdb.org/72989Broken Link
→
http://www.securityfocus.com/bid/46312Third Party Advisory · VDB Entry
→
http://www.us-cert.gov/control_systems/pdf/ICSA-10-314-01.pdfPatch · Third Party Advisory · US Government Resource
→
http://www.us-cert.gov/control_systems/pdf/ICSA-10-314-01A.pdfPatch · Third Party Advisory · US Government Resource
→
http://secunia.com/advisories/44955Third Party Advisory
→
http://www.digitalbond.com/scadapedia/vulnerability-notes/heap-overflow-vulnerability/Broken Link · Third Party Advisory
→
http://www.osvdb.org/72989Broken Link
→
http://www.securityfocus.com/bid/46312Third Party Advisory · VDB Entry
→
http://www.us-cert.gov/control_systems/pdf/ICSA-10-314-01.pdfPatch · Third Party Advisory · US Government Resource
→
http://www.us-cert.gov/control_systems/pdf/ICSA-10-314-01A.pdfPatch · Third Party Advisory · US Government Resource
Quick Facts
CVE IDCVE-2011-3143
CVSS Score10.0 / 10
SeverityCRITICAL
WeaknessCWE-399
CISA KEVNo
Affected2 vendor(s)
PublishedAug 16, 2011
Related CVEs (CWE-399)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2011-3143 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.