Off-by-one Error Affecting mbedtls3 package, versions <3.6.4-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ALPINE324-MBEDTLS3-17301376
- published11 Jun 2026
- disclosed4 Jul 2025
Introduced: 4 Jul 2025
CVE-2025-52497 (opens in a new tab)How to fix?
Upgrade Alpine:3.24 mbedtls3 to version 3.6.4-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream mbedtls3 package and not the mbedtls3 package as distributed by Alpine.
See How to fix? for Alpine:3.24 relevant fixed versions and status.
Mbed TLS before 3.6.4 has a PEM parsing one-byte heap-based buffer underflow, in mbedtls_pem_read_buffer and two mbedtls_pk_parse functions, via untrusted PEM input.