CVE-2025-12829CWE-125

CVE-2025-12829

Medium · published November 7, 2025

CVSS v3.1
6.2
EPSS
0%
Percentile
5.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.2 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00163 · 5.2th percentile
Weakness
CWE-125 · Out-of-bounds Read
Published
2025-11-07T23:15Z
References (3)
https://aws.amazon.com/security/security-bulletins/AWS-2025-027/ · ff89ba41-3aa1-4d27-914a-91399e9639e5https://github.com/amazon-ion/ion-c/releases/tag/v1.1.4 · ff89ba41-3aa1-4d27-914a-91399e9639e5https://github.com/amazon-ion/ion-c/security/advisories/GHSA-7mgf-6x73-5h7r · ff89ba41-3aa1-4d27-914a-91399e9639e5
EPSS history
Timeline
  • 07 NOV 18:04Z
    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…
    cvelistv5