CVE-2026-25833
High
Description
Mbed TLS 3.5.0 to 3.6.5 fixed in 3.6.6 and 4.1.0 has a buffer overflow in the x509_inet_pton_ipv6() function
SeverityHigh
CVSS7.5
Exploit probability—
ProductTrustedfirmware Mbed Tls
PublishedApr 1, 2026
First seenApr 1, 2026
Weakness typeCWE-121CWE-121
How to fix
Update
- trustedfirmware mbed_tls3.6.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| trustedfirmware mbed_tls | 3.5.0 ≤ v < 3.6.6, 4.0.0 | 3.6.6 |
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