CVE-2025-12829

Published: Nov 7, 2025Modified: Jun 17, 2026Deferred

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

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:XShow less

Source: ff89ba41-3aa1-4d27-914a-91399e9639e5 (Secondary)

Description

An uninitialized stack read issue exists in Amazon Ion-C versions <v1.1.4 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.

Related CWEs

CWE-125

Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

References (3)

https://aws.amazon.com/security/security-bulletins/AWS-2025-027/

Source: ff89ba41-3aa1-4d27-914a-91399e9639e5

https://github.com/amazon-ion/ion-c/releases/tag/v1.1.4

Source: ff89ba41-3aa1-4d27-914a-91399e9639e5

https://github.com/amazon-ion/ion-c/security/advisories/GHSA-7mgf-6x73-5h7r

Source: ff89ba41-3aa1-4d27-914a-91399e9639e5

Timeline

No history available yet.