CVE-2020-14123: There is a pointer double free vulnerability in Some MIUI Services

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HIGH 7.5REMOTEMITIGATE

CVE-2020-14123 is a high-severity flaw (CVSS 7.5) affecting miui. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

There is a pointer double free vulnerability in Some MIUI Services. When a function is called, the memory pointer is copied to two function modules, and an attacker can cause the pointer to be repeatedly released through malicious operations, resulting in the affected module crashing and affecting normal functionality, and if successfully exploited the vulnerability can cause elevation of privileges.

Why this priority

High severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 39%)
CISA exploited list	No
Weakness	CWE-415
Published	2022-04-22
Last modified	2026-06-17

Publisher (CNA): Xiaomi Technology Co., Ltd. · Vendor: mi

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-04-22 16:15 UTCPublished CVE record published
2026-06-17 02:54 UTCUpdated Record last modified

mi miui MITIGATE

Affected: 12.5.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 12.5.2

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-14123?

miui: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-14123 being exploited?

CVE-2020-14123 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-14123 affect?

CVE-2020-14123 affects miui. Severity is high (CVSS 7.5). There is a pointer double free vulnerability in Some MIUI Services. When a function is called, the memory pointer is copied to two function modules, and an attacker can cause the pointer to be repeatedly released through malicious operation

How urgent is CVE-2020-14123?

Priority 46/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

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CVE-2020-14120 HIGH 8.8 MITIGATE Some Xiaomi models have a vulnerability in a certain application
CVE-2020-14106 MEDIUM 5.5 UPGRADE The application in the mobile phone can unauthorized access to the list of running processes in the mobile pho

References

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