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Vulnerability record · public intelligence
CVE-2021-44732
CRITICAL
CVE-2021-44732
Published Dec 20, 2021 · Updated Oct 23, 2026
Severity · CVSSCRITICAL · 9.8
Known exploitationNot listed
EPSS / likelihood2.77%
QFinch risk score20 / 100
Original summary
Normalized public record · Updated Oct 23, 2026
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.
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
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.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
CVENVDEPSS
- SSVC priority
- MEDIUM
- Confidence
- 20%
- Aliases
- None reported
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
- GitHub advisory ↗
- tls.mbed.org ↗
- bugs.gentoo.org ↗
- Source repository ↗
- Source repository ↗
- Source repository ↗
- [debian-lts-announce] 20221225 [SECURITY] [DLA 3249-1] mbedtls security update ↗
- lists.debian.org ↗
Record history
Published Dec 20, 2021 · Last refreshed Oct 23, 2026