vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2021-24119

MEDIUM
4.9
CVSS Score
Published: July 14, 2021 at 12:00 AM UTC
Updated: June 17, 2026 at 03:39 AM UTC
3 products affected across 3 vendorsDebian LinuxFedorambed TLS

Using N/A by N/A?

Get instant alerts when new vulnerabilities affect N/A - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
MEDIUM4.9
Exploit prediction
EPSS 1%

Description

In Trusted Firmware Mbed TLS 2.24.0, a side-channel vulnerability in base64 PEM file decoding allows system-level (administrator) attackers to obtain information about secret RSA keys via a controlled-channel and side-channel attack on software running in isolated environments that can be single stepped, especially Intel SGX.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

mbed TLS· Arm
95%
v < 2.26.0
Affected range stops below 2.26.0, so it looks safe — our inference, not a vendor statement
Debian Linux· Debiandrupal
95%
10.09.0
Fedora· Fedora Projectrpm
95%
3334

References (7)

Release NotesThird Party Advisory
Source: [email protected]
https://github.com/ARMmbed/mbedtls/releases
x_refsource_MISCRelease NotesThird Party Advisory
Source: [email protected]
https://github.com/UzL-ITS/util-lookup/blob/main/cve-vulnerability-publication.md
Mailing ListThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2021/11/msg00021.html
Mailing ListThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html
Vendor AdvisoryMailing ListThird Party Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DRRVY7DMTX3ECFNZKDYTSFEG5AI2HBC6/
Vendor AdvisoryMailing ListThird Party Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EYJW7HAW3TDV2YMDFYXP3HD6WRQRTLJW/
Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.debian.org/debian-lts-announce/2025/06/msg00034.html

CVSS

4.9MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-203

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card