CVE-2026-25833 identifies a high-severity buffer overflow (CWE-121) in the x509_inet_pton_ipv6() function affecting Mbed TLS versions 3.5.0 through 3.6.5. This vulnerability carries a CVSS score of 7.5 HIGH, indicating it can be exploited remotely over the network with low attack complexity. Successful exploitation could lead to a denial of service, impacting system availability. While not currently listed on CISA's Known Exploited Vulnerabilities catalog and lacking public exploit code, the vulnerability is receiving community attention and is being tracked on security platforms.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 3.5.0, < 3.6.6CPE matchmatch criteria | cpe:2.3:a:trustedfirmware:mbed_tls:*:*:*:*:*:*:*:* | ||
4.0.0CPE matchmatch criteria | cpe:2.3:a:trustedfirmware:mbed_tls:4.0.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.