CVE-2026-25833
7.5
HIGH
CVSS 3.1
EPSS 0.05%
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
How to fix CVE-2026-25833
To remediate CVE-2026-25833, upgrade the affected package to a fixed version below.
- Alpine/mbedtls—upgrade to 3.6.6-r0 or later
- Debian/mbedtls—no fix listed
Is CVE-2026-25833 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 3.6.6-r0
- from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |