{"affected":[{"defaultStatus":"unaffected","ecosystem":"github","packageName":"stefanschippers/xschem","product":"xschem","source":"CNA: VulnCheck","vendor":"Stefan Schippers","versions":[{"lessThanOrEqual":"3.4.7","status":"affected","version":"2.9.9","versionType":"custom"}]}],"cveId":"CVE-2026-128990","cwes":["CWE-787"],"description":"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.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":8.5,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},{"score":7.8,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1794582103598,"publishedAt":1794582103598,"references":[{"source":"CNA: VulnCheck","tags":["patch"],"url":"https://github.com/StefanSchippers/xschem/commit/e29af39c6133c36bdaf66603fd663231e75517f1"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://github.com/StefanSchippers/xschem/blob/3.4.7/src/rawtovcd.c#L124-L148"},{"source":"CNA: VulnCheck","tags":["product"],"url":"https://github.com/StefanSchippers/xschem"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/xschem-2.9.9-through-3.4.7-heap-out-of-bounds-write-via-rawtovcd-read-dataset"}],"remediation":[{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/StefanSchippers/xschem/commit/e29af39c6133c36bdaf66603fd663231e75517f1"}],"revision":"e25da469cde68c976af9bd9781ade962a6274511d663b6b1a0de31f2594e11b7","sources":[{"modifiedAt":1794582103598,"name":"CNA: VulnCheck","retrievedAt":1794582614015,"url":"https://www.cve.org/CVERecord?id=CVE-2026-128990"}],"ssvc":null,"status":"published","title":"xschem 2.9.9 through 3.4.7 Heap Out-of-Bounds Write via rawtovcd read_dataset()","updatedAt":1794582614015}