CVE-2025-12829

medium

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.

References

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

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

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

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

Details

Source: Mitre, NVD

Published: 2025-11-07

Updated: 2025-11-07

Risk Information

CVSS v2

Base Score: 4.9

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 6.2

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Severity: Medium

CVSS v4

Base 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

Severity: Medium

EPSS

EPSS: 0.00011