CVE-2021-24119

mediumpriority · track · 21EPSS 0.015 · 74 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.48% (74th) EPSS

CVSS 4 · medium

Is it mine?

14 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

4.9

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04mediumAV:N/AC:L/Au:S/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 8 · impact 2.9

v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 1.2 · impact 3.6

v3.14.9mediumAV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:Nsecondary · FSTEC (BDU) RU

v3.14.5mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-203USprimaryCWE-203US

affected products (14)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
ARM Limited Mbed TLS≤ 2.26.0fstec_bduRU
Fedora Project Fedora≤ 33fstec_bduRU
Fedora Project Fedora≤ 34fstec_bduRU
АО «Концерн ВНИИНС» ОС ОН «Стрелец»≤ 16.01.2023fstec_bduRU
АО «НППКТ» ОСОН ОСнова Оnyx≤ 2.6fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 9fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 10fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 11fstec_bduRU
arm mbed tls< 2.26.0nvdUScpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*
debian debian linux= 10.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
debian debian linux= 9.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
fedoraproject fedora= 33nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
fedoraproject fedora= 34nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2021-07-14modified 2026-06-17

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+881 more

references (24)

External citations — patches, advisories, analysis.

scry

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