What’s Vulnerable › Vulnerabilities

CVE-2025-12829

• Severity: medium (CVSS 6.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-11-07 · updated 2026-10-07
• Weakness: CWE-125

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://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

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