CVE-2021-23218
Memory Leak in Mirantis Container Runtime (MCR) running in FIPS mode causes a Denial of Service
When running with FIPS mode enabled, Mirantis Container Runtime 20.10.8 leaks memory during TLS Handshakes which could be abused to cause a denial of service.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Memory Leak in Mirantis Container Runtime (MCR) running in FIPS mode causes a Denial of Service
When running with FIPS mode enabled, Mirantis Container Runtime 20.10.8 leaks memory during TLS Handshakes which could be abused to cause a denial of service.
- Record
CVE-2021-23218- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-401
- Updated
- 2026-11-02
EUVDEUVD-2021-10321
When running with FIPS mode enabled, Mirantis Container Runtime 20.10.8 leaks memory during TLS Handshakes which could be abused to cause a denial of service.
- Record
EUVD-2021-10321- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-3v69-r3x2-qgp5 No score
When running with FIPS mode enabled, Mirantis Container Runtime 20.10.8 leaks memory during TLS...
When running with FIPS mode enabled, Mirantis Container Runtime 20.10.8 leaks memory during TLS Handshakes which could be abused to cause a denial of service.
- Record
GHSA-3v69-r3x2-qgp5- Weakness
- CWE-401
- Updated
- 2026-11-02
NVD
When running with FIPS mode enabled, Mirantis Container Runtime 20.10.8 leaks memory during TLS Handshakes which could be abused to cause a denial of service.
- Record
CVE-2021-23218- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:N/A:P - Weakness
- CWE-401
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-23218 is a medium vulnerability (CVSS 5.3) in Mirantis Container Runtime, published January 10, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.93%, the 60th percentile. No source names a fixed version.