Linux · openSUSE Leap · Security advisory · June 22, 2026

OPENSUSE-SU-2026:21144-1: mbedtls security update

OPENSUSE-SU-2026:21144-1, released June 22, 2026, fixes 15 CVEs in mbedtls (version 3.6.6-bp160.1.1). None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent
CVEs closed
15
2 rated Critical
Exploited
0
None reported
Highest CVSS
9.8
Base score, 0 to 10
Highest EPSS
0.0244
84th percentile

Priority of the 15 CVEs

Patch now 0 Urgent 2 High 4 Routine 9

Fixed package versions

ProductReleaseFixed in
mbedtlsopensuse-leap 16.03.6.6-bp160.1.1

CVEs this fix closes

PriorityCVETitleCVSSEPSSExploitation
Urgent CVE-2025-47917 mbedtls: (boo#1246783): misleading memory management in9.8 0.0244 None reported
Urgent CVE-2024-49195 mbedtls: (boo#1231708): buffer underrun in pkwrite when9.8 0.0063 None reported
High CVE-2025-48965 mbedtls: (boo#1246784): NULL pointer dereference after7.5 0.0057 None reported
High CVE-2026-25833 ovmf: mbedtls: buffer overflow in the `x509_inet_pton_ipv6()` function (bsc#1261476).7.5 0.0032 None reported
High CVE-2025-52496 Mbed TLS before 3.6.4 has a race condition in AESNI detection if certain compiler optimizations occur. An attacker may be able to extract an AES key from a multithreaded program, or perform a GCM forgery.7.8 0.0021 None reported
High CVE-2026-25835 mbedtls: Mbed TLS before 3.6.6 and TF-PSA-Crypto before 1.1.0 misuse seeds in a Pseudo-Random Number Generator (PRNG).7.7 0.0018 None reported
Routine CVE-2025-49087 mbedtls: (boo#1246973): timing side channel in PKCS#73.7 0.0047 None reported
Routine CVE-2025-52497 mbedtls: (boo#1245811): one-byte heap underflow when parsing4.8 0.0033 None reported
Routine CVE-2025-49601 mbedtls: (boo#1245809): out-of-bounds read in6.5 0.0032 None reported
Routine CVE-2025-27810 mbedtls: (boo#1240052): possible authentication bypass on4.8 0.0030 None reported
Routine CVE-2025-59438 ovmf: mbedtls: padding oracle attack possible through timing of cipher error reporting (bsc#1252441).5.3 0.0026 None reported
Routine CVE-2025-54764 mbedtls: (boo#1252341): timing attacks in RSA operations6.2 0.0022 None reported
Routine CVE-2025-27809 mbedtls: (boo#1240051): certificate verification accepted5.4 0.0020 None reported
Routine CVE-2025-49600 mbedtls: (boo#1245808): unchecked return values in LMS4.9 0.0016 None reported
Routine CVE-2026-25834 mbedtls: Mbed TLS v3.3.0 up to 3.6.5 and 4.0.0 allows Algorithm Downgrade.6.5 0.0014 None reported
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