CVE-2026-128990

EUVD-2026-125402
xschem 2.9.9 through 3.4.7 contains a heap out-of-bounds write vulnerability in read_dataset() in src/rawtovcd.c due to an unchecked variable index. Attackers can supply a crafted ngspice .raw file that, when converted with rawtovcd, writes file-controlled heap pointers at chosen signed offsets, corrupting heap memory.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.8 HIGH
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Common Weakness Enumeration
References
https://github.com/StefanSchippers/xschem
https://github.com/StefanSchippers/xschem/blob/3.4.7/src/rawtovcd.c#L124-L148
https://github.com/StefanSchippers/xschem/commit/e29af39c6133c36bdaf66603fd663231e75517f1
https://www.vulncheck.com/advisories/xschem-2.9.9-through-3.4.7-heap-out-of-bounds-write-via-rawtovcd-read-dataset