CVE-2026-55958: Renesas TSIP TLS 1.3 transcript buffer out-of-bounds write in tsip_StoreMessage

Overview

Severity

High (CVSS 7.5)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Status

Not Exploited

Patch Tuesday

2026-Jun

Released

2026-07-01

EPSS Score

0.27% (percentile: 18.4%)

Affected Products (1)

Other

• 21516-17084

Revision History

• 2026-07-01: Information published.