CVE-2021-44732

CRITICAL

CVSS v3.1: 9.8 · EPSS: 0.0095 (76.8 percentile)

NetworkNo privilegesNo user interactionDouble FreeVendor advisory ref

Source data as of:

At a glance

Severity
CRITICAL
CVSS
9.8 v3.1 · NVD
EPSS
0.0095 (76.8 percentile) · FIRST.org
CISA KEV
No
Type
Double Free · NVD CWE
Attack conditions (CVSS vector)
NetworkNo privilegesNo user interaction · Source: NVD Vector
Affected vendors
arm, trustedfirmware, debian
Published
2021-12-20 · Modified: 2026-06-05
References
Jump to references (7)

CVSS / EPSS / KEV

CVSS v3.1 9.8 / 10 CRITICAL Source: NVD
EPSS 0.0095 76.8 percentile Source: FIRST.org
CISA KEV No Source: CISA

Source — CVSS: NVD · EPSS: FIRST.org · KEV: CISA. Data & Sources

Description

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.

Record details

CVE ID
CVE-2021-44732
CVSS (v3.1)
9.8 (CRITICAL)
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitability subscore
3.9
Impact subscore
5.9
EPSS
0.0095 (76.8 percentile) — 2026-06-06
CISA KEV
No
Weakness (CWE)
CWE-415
Affected vendors
arm, trustedfirmware, debian
Affected configurations (CPE)
5
Published
2021-12-20
Modified
2026-06-05
Status
Modified

References

Reference URLs as listed by NVD, grouped by a mechanical match on the link's host/pattern. Labels describe the link type only.

Related records

Other records sharing a factual facet, for cross-reference. A descriptive neighbourhood — ordering does not imply priority and is not a recommendation.

Same affected vendor

CVE-2022-46393 CRITICAL CVSS 9.8 CVE-2026-34877 CRITICAL CVSS 9.8 CVE-2022-35409 CRITICAL CVSS 9.1 CVE-2024-28960 HIGH CVSS 8.2

Same weakness type (CWE)

CVE-2023-41325 HIGH CVSS 7.4

Published the same year

CVE-2021-43619 HIGH CVSS 7.8 CVE-2021-44149 HIGH CVSS 7.8 CVE-2021-45450 HIGH CVSS 7.5 CVE-2021-36133 HIGH CVSS 7.1
← Back to all records