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Vulnerability details: VCID-dbz8-jg9d-akc6
Vulnerability ID VCID-dbz8-jg9d-akc6
Aliases CVE-2020-36475
Summary An issue was discovered in Mbed TLS before 2.25.0 (and before 2.16.9 LTS and before 2.7.18 LTS). The calculations performed by mbedtls_mpi_exp_mod are not limited; thus, supplying overly large parameters could lead to denial of service when generating Diffie-Hellman key pairs.
Status Published
Exploitability 0.5
Weighted Severity 6.8
Risk 3.4
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-131 Incorrect Calculation of Buffer Size
System Score Found at
epss 0.00308 https://api.first.org/data/v1/epss?cve=CVE-2020-36475
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2020-36475
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2020-36475
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2020-36475
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2020-36475
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2020-36475
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2020-36475
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2020-36475
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2020-36475
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2020-36475
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2020-36475
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2020-36475
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2020-36475
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2020-36475
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2020-36475
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2020-36475
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2020-36475
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2020-36475
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2020-36475
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2020-36475
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2020-36475
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2020-36475
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2020-36475
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2020-36475
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2020-36475
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2020-36475
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2020-36475
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2020-36475
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2020-36475
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2020-36475
https://cert-portal.siemens.com/productcert/pdf/ssa-756638.pdf
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-36475
https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.9
https://github.com/ARMmbed/mbedtls/releases/tag/v2.25.0
https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.18
https://lists.debian.org/debian-lts-announce/2021/11/msg00021.html
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:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
CVE-2020-36475 https://nvd.nist.gov/vuln/detail/CVE-2020-36475
No exploits are available.
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2020-36475
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:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2020-36475
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 0.53517
EPSS Score 0.00308
Published At Aug. 16, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T10:19:53.203986+00:00 NVD Importer Import https://nvd.nist.gov/vuln/detail/CVE-2020-36475 37.0.0