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Vulnerability details: VCID-8pdb-tcxb-4uah
Vulnerability ID VCID-8pdb-tcxb-4uah
Aliases CVE-2021-44732
Summary Mbed TLS before 3.0.1 has a double free in certain out-of-memory conditions, as demonstrated by an mbedtls_ssl_set_session() failure.
Status Published
Exploitability 0.5
Weighted Severity 8.8
Risk 4.4
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-415 Double Free
System Score Found at
epss 0.00432 https://api.first.org/data/v1/epss?cve=CVE-2021-44732
epss 0.00432 https://api.first.org/data/v1/epss?cve=CVE-2021-44732
epss 0.00432 https://api.first.org/data/v1/epss?cve=CVE-2021-44732
epss 0.00432 https://api.first.org/data/v1/epss?cve=CVE-2021-44732
epss 0.00432 https://api.first.org/data/v1/epss?cve=CVE-2021-44732
epss 0.00432 https://api.first.org/data/v1/epss?cve=CVE-2021-44732
epss 0.00432 https://api.first.org/data/v1/epss?cve=CVE-2021-44732
epss 0.00432 https://api.first.org/data/v1/epss?cve=CVE-2021-44732
epss 0.00432 https://api.first.org/data/v1/epss?cve=CVE-2021-44732
epss 0.00432 https://api.first.org/data/v1/epss?cve=CVE-2021-44732
epss 0.00432 https://api.first.org/data/v1/epss?cve=CVE-2021-44732
epss 0.00432 https://api.first.org/data/v1/epss?cve=CVE-2021-44732
epss 0.00432 https://api.first.org/data/v1/epss?cve=CVE-2021-44732
epss 0.00432 https://api.first.org/data/v1/epss?cve=CVE-2021-44732
epss 0.00432 https://api.first.org/data/v1/epss?cve=CVE-2021-44732
epss 0.00432 https://api.first.org/data/v1/epss?cve=CVE-2021-44732
epss 0.00432 https://api.first.org/data/v1/epss?cve=CVE-2021-44732
epss 0.00432 https://api.first.org/data/v1/epss?cve=CVE-2021-44732
epss 0.00432 https://api.first.org/data/v1/epss?cve=CVE-2021-44732
epss 0.00432 https://api.first.org/data/v1/epss?cve=CVE-2021-44732
epss 0.00432 https://api.first.org/data/v1/epss?cve=CVE-2021-44732
epss 0.00432 https://api.first.org/data/v1/epss?cve=CVE-2021-44732
epss 0.00432 https://api.first.org/data/v1/epss?cve=CVE-2021-44732
epss 0.00432 https://api.first.org/data/v1/epss?cve=CVE-2021-44732
epss 0.00432 https://api.first.org/data/v1/epss?cve=CVE-2021-44732
epss 0.00432 https://api.first.org/data/v1/epss?cve=CVE-2021-44732
cvssv2 7.5 https://nvd.nist.gov/vuln/detail/CVE-2021-44732
cvssv3.1 9.8 https://nvd.nist.gov/vuln/detail/CVE-2021-44732
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2021-44732
https://bugs.gentoo.org/829660
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44732
https://github.com/ARMmbed/mbedtls/releases
https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.12
https://github.com/ARMmbed/mbedtls/releases/tag/v2.28.0
https://github.com/ARMmbed/mbedtls/releases/tag/v3.1.0
https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html
https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2021-12
1002631 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1002631
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:a:arm:mbed_tls:3.0.0:-:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:arm:mbed_tls:3.0.0:-:*:*:*:*:*:*
cpe:2.3:a:arm:mbed_tls:3.0.0:preview1:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:arm:mbed_tls:3.0.0:preview1:*:*:*:*:*:*
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-2021-44732 https://nvd.nist.gov/vuln/detail/CVE-2021-44732
No exploits are available.
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2021-44732
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:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-44732
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 0.61799
EPSS Score 0.00432
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:31:35.438344+00:00 Alpine Linux Importer Import https://secdb.alpinelinux.org/v3.14/main.json 37.0.0