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Vulnerability details: VCID-h2ew-fcbr-aaaq
Vulnerability ID VCID-h2ew-fcbr-aaaq
Aliases CVE-2020-36423
Summary An issue was discovered in Arm Mbed TLS before 2.23.0. A remote attacker can recover plaintext because a certain Lucky 13 countermeasure doesn't properly consider the case of a hardware accelerator.
Status Published
Exploitability 0.5
Weighted Severity 6.8
Risk 3.4
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-319 Cleartext Transmission of Sensitive Information
System Score Found at
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cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2020-36423
cvssv3 7.5 https://nvd.nist.gov/vuln/detail/CVE-2020-36423
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2020-36423
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2020-36423
https://bugs.gentoo.org/730752
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-36423
https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.7
https://github.com/ARMmbed/mbedtls/releases/tag/v2.23.0
https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html
cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
CVE-2020-36423 https://nvd.nist.gov/vuln/detail/CVE-2020-36423
No exploits are available.
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2020-36423
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2020-36423
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2020-36423
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.20256
EPSS Score 0.00077
Published At March 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.