CVE-2025-12829

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.

CVSS v3 6.2 MEDIUM

6.2^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.5 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://aws.amazon.com/security/security-bulletins/AWS-2025-027/
https://github.com/amazon-ion/ion-c/releases/tag/v1.1.4
https://github.com/amazon-ion/ion-c/security/advisories/GHSA-7mgf-6x73-5h7r

Configurations

No configuration.

History

07 Nov 2025, 19:15

Type	Values Removed	Values Added
References		() https://github.com/amazon-ion/ion-c/releases/tag/v1.1.4 - () https://github.com/amazon-ion/ion-c/security/advisories/GHSA-7mgf-6x73-5h7r -

07 Nov 2025, 18:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-11-07 18:15

Updated : 2025-11-12 16:20

NVD link : CVE-2025-12829

Mitre link : CVE-2025-12829

CVE.ORG link : CVE-2025-12829

JSON object : View

Products Affected

No product.

CWE

CWE-125

Out-of-bounds Read

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