CVE-2026-34875
mbedtls: Mbed TLS and TF-PSA-Crypto: Arbitrary code execution due to buffer overflow in FFDH key export
Severity by source
Trivy's own label is CRITICAL. Rated critical by Red Hat.
Description
An issue was discovered in Mbed TLS through 3.6.5 and TF-PSA-Crypto 1.0.0. A buffer overflow can occur in public key export for FFDH keys.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| debian 11 | mbedtls | no fix listed |
| debian 12 | mbedtls | no fix listed |
| debian 13 | mbedtls | 3.6.6-0.1~deb13u1 |
| debian 14 | mbedtls | 3.6.6-0.1 |
| echo | mbedtls | 3.6.6 |
| rapidfort debian 12 | mbedtls, rf-mbedtls | 0:3.6.6-0.1, 0:3.6.6-0.1~deb13u1 |
| rapidfort debian 13 | mbedtls, rf-mbedtls | 0:3.6.6-0.1, 0:3.6.6-0.1~deb13u1 |
| root.io debian 12 | mbedtls, rootio-mbedtls | 2.28.3-1.root.io.14, 2.28.3-1.root.io.15, 2.28.3-1.root.io.16 |
Show all 11 entries from 8 sources
| Source | Package | Fixed in |
|---|---|---|
| debian 11 | mbedtls | no fix listed |
| debian 12 | mbedtls | no fix listed |
| debian 13 | mbedtls | 3.6.6-0.1~deb13u1 |
| debian 14 | mbedtls | 3.6.6-0.1 |
| echo | mbedtls | 3.6.6 |
| rapidfort debian 12 | mbedtls | 0:3.6.6-0.1, 0:3.6.6-0.1~deb13u1 |
| rapidfort debian 12 | rf-mbedtls | 0:3.6.6-0.1, 0:3.6.6-0.1~deb13u1 |
| rapidfort debian 13 | mbedtls | 0:3.6.6-0.1, 0:3.6.6-0.1~deb13u1 |
| rapidfort debian 13 | rf-mbedtls | 0:3.6.6-0.1, 0:3.6.6-0.1~deb13u1 |
| root.io debian 12 | mbedtls | 2.28.3-1.root.io.14, 2.28.3-1.root.io.15, 2.28.3-1.root.io.16 |
| root.io debian 12 | rootio-mbedtls | 2.28.3-1.root.io.14, 2.28.3-1.root.io.15, 2.28.3-1.root.io.16 |
References
- https://access.redhat.com/security/cve/CVE-2026-34875
- https://mbed-tls.readthedocs.io/en/latest/security-advisories/
- https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2026-03-ffdh-buffer-overflow/
- https://nvd.nist.gov/vuln/detail/CVE-2026-34875
- https://www.cve.org/CVERecord?id=CVE-2026-34875