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CVE-2026-34873
Component Overview
Vulnerability Overview
Name
CVE-2026-34873
Source
NVD (
link
)
Debian (
link
)
Description
An issue was discovered in Mbed TLS 3.5.0 through 4.0.0. Client impersonation can occur while resuming a TLS 1.3 session.
CWEs
CWE-287
Published Date
Apr 1, 2026
Updated Date
Jun 17, 2026
Workaround
-
Advisories
https://mbed-tls.readthedocs.io/en/latest/security-advisories/
Vendor Advisory
https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2026-03-client-impersonation-while-resuming-tls13-session/
Vendor Advisory
Analysis
#
Affected Component
Analysis
Vulnerability Ratings
#
9.1
CVSSv31
NaN
other
Others affected components
#
Name
Project
Project Version
Version
Status
mbedtls
buildroot
2025.02.x
3.6.6
Not Affected
mbedtls
buildroot
master
3.6.6
Not Affected
mbedtls
openwrt
master
3.6.7-r1
Not Affected
mbedtls
openwrt
openwrt-25.12
3.6.7-r1
Not Affected
mbedtls
yocto
master
3.6.7
Not Affected
mbedtls
yocto
scarthgap
2.28.10
Not Affected