{"id":"CVE-2025-12829","aliases":["EUVD-2025-38328","GHSA-7mgf-6x73-5h7r"],"status":"published","description":"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.","severity":{"version":"4.0","score":6.9,"vector":"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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00161,"percentile":0.05356,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2025-11-07T18:04:15Z","modified":"2026-10-28T02:30:21Z","products":[{"vendor":"amazon","product":"ion-c"}],"references":[{"url":"https://aws.amazon.com/security/security-bulletins/AWS-2025-027/","tags":["vendor-advisory","advisory"]},{"url":"https://github.com/amazon-ion/ion-c/releases/tag/v1.1.4","tags":["patch","fix"]},{"url":"https://github.com/amazon-ion/ion-c/security/advisories/GHSA-7mgf-6x73-5h7r","tags":["vendor-advisory","advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/12xxx/CVE-2025-12829.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-12829","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2025-12829","description":"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.","status":"published","published":"2025-11-07T18:04:15.7Z","modified":"2025-11-07T18:13:55.938Z","cvss":[{"version":"4.0","score":6.9,"vector":"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","level":"medium","assessor":"cna"},{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:32:42.078906Z"}],"euvd":[{"id":"EUVD-2025-38328","description":"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.","status":"published","published":"2025-11-07T18:04:15Z","modified":"2025-11-07T18:13:55Z","cvss":[{"version":"4.0","score":6.9,"vector":"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","level":"medium"}],"updated_at":"2026-11-02T19:49:19.321345Z"}],"nvd":[{"id":"CVE-2025-12829","description":"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.","status":"published","published":"2025-11-07T18:15:35.59Z","modified":"2026-10-07T21:10:00.2Z","cvss":[{"version":"4.0","score":6.9,"vector":"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","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:11:42.870953Z"}],"osv":[{"id":"CVE-2025-12829","description":"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.","status":"published","published":"2025-11-07T18:04:15.7Z","modified":"2026-10-28T02:30:21.075951494Z","cvss":[{"version":"4.0","score":6.9,"vector":"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","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:44:46.024537Z"}]}}