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7.2 High

P-Net before 1.0.3 does not validate the LengthPeerStationName field of a CheckPeers block in getcheckpeer().

CVE-2026-111730

P-Net before 1.0.3 does not validate the LengthPeerStationName field of a CheckPeers block in getcheckpeer(). The received length (up to 255) was used to copy data into the 241-byte peer station name buffer and to place the terminating NUL byte, so a crafted block writes up to 15 bytes past the end of the buffer. This can lead to a crash (denial of service) or potentially arbitrary code execution. Requires establishment of session that needs ADJACENT network access.

Assessment

CVSS
7.2 (v4.0)
Severity
High
Known exploited
Not listed in CISA KEV
Exploit availability
Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published
29 October 2026
Last updated
29 October 2026
Weakness
CWE-787
Assigner
4b71179a-3b92-4a9d-b9fc-af8b8ed579ee

CVSS vectorCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

At the source

References

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