Is CVE-2026-25833 actively exploited?

CVE-2026-25833 has no public evidence of in-the-wild exploitation as of 2026-04-06.

What is the CVSS score for CVE-2026-25833?

CVE-2026-25833 has a CVSS score of 7.5 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Patch guidance is available from arm security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-25833.

2 products: arm mbed tls, arm mbed tls.

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

Primary Vendor: ARM
Published: 4/1/2026
Last Modified: 4/6/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.