CVE-2020-36475

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-131

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://cert-portal.siemens.com/productcert/pdf/ssa-756638.pdfPatch, Third Party Advisory
https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.9Release Notes, Third Party Advisory
https://github.com/ARMmbed/mbedtls/releases/tag/v2.25.0Release Notes, Third Party Advisory
https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.18Release Notes, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/11/msg00021.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/12/msg00036.htmlMailing List, Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-756638.pdfPatch, Third Party Advisory
https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.9Release Notes, Third Party Advisory
https://github.com/ARMmbed/mbedtls/releases/tag/v2.25.0Release Notes, Third Party Advisory
https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.18Release Notes, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/11/msg00021.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/12/msg00036.htmlMailing List, Third Party Advisory

Timeline

Published: Aug 23, 2021
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2020

CVE-2020-364767.5An issue was discovered in Mbed TLS before 2.24.0 (and before 2.16.8 LTS and before 2.7.17 LTS). There is missing zeroization of plaintext b CVE-2020-364775.9An issue was discovered in Mbed TLS before 2.24.0. The verification of X.509 certificates when matching the expected common name (the cn arg CVE-2020-364787.5An issue was discovered in Mbed TLS before 2.25.0 (and before 2.16.9 LTS and before 2.7.18 LTS). A NULL algorithm parameters entry looks ide CVE-2020-36487.8u'Possible out of bound write in DSP driver code due to lack of check of data received from user' in Snapdragon Auto, Snapdragon Compute, Sn CVE-2020-364857.8Portable Ltd Playable v9.18 was discovered to contain an arbitrary file upload vulnerability in the filename parameter of the upload module.CVE-2020-364866.1Swift File Transfer Mobile v1.1.2 and below was discovered to contain a cross-site scripting (XSS) vulnerability via the 'path' parameter of CVE-2020-364886.5An issue in the FTP server of Sky File v2.1.0 allows attackers to perform directory traversal via `/null//` path commands.CVE-2020-364895.4Dropouts Technologies LLP Air Share v1.2 was discovered to contain a cross-site scripting (XSS) vulnerability in the devicename parameter. T CVE-2020-364905.4DedeCMS v7.5 SP2 was discovered to contain multiple cross-site scripting (XSS) vulnerabilities in the component file_manage_view.php via the CVE-2020-364915.4DedeCMS v7.5 SP2 was discovered to contain multiple cross-site scripting (XSS) vulnerabilities in the component tags_main.php via the `activ CVE-2020-364925.4DedeCMS v7.5 SP2 was discovered to contain multiple cross-site scripting (XSS) vulnerabilities in the component select_media.php via the `ac CVE-2020-364935.4DedeCMS v7.5 SP2 was discovered to contain multiple cross-site scripting (XSS) vulnerabilities in the component media_main.php via the `acti