CVE-2026-101103
MediumCVSS 5.5Summary
The PEAK-System PCAN diagnostic call did not validate that the caller-supplied output buffer was large enough to hold the output record. This may lead to an out-of-bounds write.
Risk Assessment
Potential memory corruption or crash of applications using PCAN, and in extreme cases possible code execution.
Recommendation
Update the PEAK-System PCAN driver/library to a version that includes the buffer size validation fix.
Other vulnerabilities in PEAK-System PCAN
See all- CVE-2026-110322Medium
The PEAK-System PCAN type 0x4030 processing path fails to validate a selected or returned object pointer before dereferencing fixed fields during post-processing.
- CVE-2026-109576Medium
The parser in the PEAK-System PCAN driver correctly detected the malformed record, but the loop iterating the record list advanced its processed-bytes counter even when a record had been rejected as invalid.
- CVE-2026-105960Medium
PEAK-System PCAN contains a vulnerable operation involving a variable-length receive-record copy. The driver uses a requested or queued record count without sufficiently capping the copy to the actual caller-supplied output length.
Original NVD description (English source)
The PEAK-System PCAN diagnostic call did not validate that the caller-supplied output buffer was large enough to hold the output record.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS