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
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.
- Published
- Aug 16, 2011
- Updated
- Jun 16, 2026
- EPSS
- 7.5% · 94th percentile
- CWE
- CWE-399
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Report tools
Action score
42
Plan
Add it to your regular patch cycle.
- CVSS
- 40 / 40 · 10.0 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 2 / 30 · 7.5%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| aveva | clearscada | cpe:2.3:a:aveva:clearscada |
| schneider-electric | scx 67 | cpe:2.3:a:schneider-electric:scx_67 |
| schneider-electric | scx 68 | cpe:2.3:a:schneider-electric:scx_68 |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- aveva clearscada2005
- aveva clearscada2007
- aveva clearscada2009
- schneider-electric scx 67before r4.5
- schneider-electric scx 68before r3.9
Same product
aveva: all recordsOther highest-scoring records for the same primary product.
- CVE-2017-6021In Schneider Electric ClearSCADA 2014 R1 (build 75.5210) and prior, 2014 R1.1 (build 75.5387) and prior, 2015 R1 (build 76.5648) and prior, 31Monitor
- CVE-2017-9962Schneider Electric's ClearSCADA versions released prior to August 2017 are susceptible to a memory allocation vulnerability, whereby malform30Monitor
- CVE-2014-0779Schneider Electric StruxureWare SCADA Expert ClearSCADA Improper Restriction of Operations within the Bounds of a Memory Buffer27Monitor
- CVE-2014-5413Schneider Electric SCADA Expert ClearSCADA Cryptographic Issues20Monitor
- CVE-2014-5412Schneider Electric SCADA Expert ClearSCADA Improper Authentication20Monitor
- CVE-2011-3144Cross-site scripting (XSS) vulnerability in Control Microsystems ClearSCADA 2005, 2007, and 2009 before R2.3 and R1.4, as used in SCX before18Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- C · data can be read
- Integrity
- C · data or configuration can be modified
- Availability
- C · the service can be disrupted
- Attack complexity
- Low
- Confidentiality impact
- C
- Integrity impact
- C
- Availability impact
- C
Weakness class (CWE)
CWE-399 · Resource Management ErrorsCVSS vector
AV:N/AC:L/Au:N/C:C/I:C/A:C
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- secunia.com/advisories/44955
- www.digitalbond.com/scadapedia/vulnerability-notes/heap-overflow-vulnerability/
- www.osvdb.org/72989
- www.securityfocus.com/bid/46312
- www.us-cert.gov/control_systems/pdf/ICSA-10-314-01.pdf
- www.us-cert.gov/control_systems/pdf/ICSA-10-314-01A.pdf
Vendor advisories and official records. Exploit/PoC links are deliberately left out.