{"id":"CVE-2025-12829","details":"An uninitialized stack read issue exists in Amazon Ion-C versions \u003cv1.1.4 that may allow a threat actor to craft data and serialize it to Ion text in such a way that sensitive data in memory could be exposed through UTF-8 escape sequences. To mitigate this issue, users should upgrade to version v1.1.4.","aliases":["GHSA-7mgf-6x73-5h7r"],"modified":"2026-03-15T22:50:14.152826Z","published":"2025-11-07T18:15:35.590Z","references":[{"type":"WEB","url":"https://aws.amazon.com/security/security-bulletins/AWS-2025-027/"},{"type":"WEB","url":"https://github.com/amazon-ion/ion-c/releases/tag/v1.1.4"},{"type":"ADVISORY","url":"https://github.com/amazon-ion/ion-c/security/advisories/GHSA-7mgf-6x73-5h7r"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/amazon-ion/ion-c","events":[{"introduced":"0"},{"fixed":"49c53b55e1245a8aa161054dda41829fd687766a"}]}],"versions":["v1.0.0","v1.0.1","v1.0.2","v1.0.3","v1.0.5","v1.0.6","v1.1.0","v1.1.2","v1.1.3","v1.4.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-12829.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"UTF-8"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/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"}]}