Code execution via undisclosed out-of-bounds buffer write
Published Jul 7, 2026 · Updated Jul 7, 2026
Out-of-bounds write in Labcenter Proteus 9.1 SP4 build 42914 allows attackers to execute arbitrary code via unspecified input. CISA has not disclosed the affected parser, file format, or operation that writes beyond the allocated buffer. Exploitation requires active user interaction in a local attack context and runs code with the Proteus process's privileges.
Summary
What happened
Out-of-bounds write in Labcenter Proteus 9.1 SP4 build 42914 allows attackers to execute arbitrary code via unspecified input. CISA has not disclosed the affected parser, file format, or operation that writes beyond the allocated buffer. Exploitation requires active user interaction in a local attack context and runs code with the Proteus process's privileges.
The record
- CVE
- CVE-2026-42953
- Published
- Jul 7, 2026
- Updated
- Jul 7, 2026
- Vendor
- Labcenter Electronics Limited
- Product
- Proteus Design Suite
- Classifications
- CWE-787, T1203
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 7, 2026CVE publishedPublication date reported by the CVE source.
- Jul 7, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=9.1_SP4_Build-42914
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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