CVE-2020-14127: A denial of service vulnerability exists in some Xiaomi models of phones

Q: How do I fix CVE-2020-14127?

miui: upgrade to 2022.07.01. Exact commands for each OS are on this page.

Q: Is CVE-2020-14127 being exploited?

CVE-2020-14127 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2020-14127 affect?

CVE-2020-14127 affects miui. Severity is high (CVSS 7.5). A denial of service vulnerability exists in some Xiaomi models of phones. The vulnerability is caused by heap overflow and can be exploited by attackers to make remote denial of service.

Q: How urgent is CVE-2020-14127?

Priority 47/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADE

CVE-2020-14127 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.

A denial of service vulnerability exists in some Xiaomi models of phones. The vulnerability is caused by heap overflow and can be exploited by attackers to make remote denial of service.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.1% (top 36%)
CISA exploited list	No
Weakness	CWE-787
Published	2022-07-14
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

2022-07-14 15:15 UTCPublished CVE record published
2026-06-17 02:54 UTCUpdated Record last modified

mi miui UPGRADE

Affected: < 2022.07.01

Fixed in: 2022.07.01

Safe to downgrade to: no unaffected older release

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-2020-14127?

miui: upgrade to 2022.07.01. Exact commands for each OS are on this page.

Is CVE-2020-14127 being exploited?

CVE-2020-14127 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-2020-14127 affect?

CVE-2020-14127 affects miui. Severity is high (CVSS 7.5). A denial of service vulnerability exists in some Xiaomi models of phones. The vulnerability is caused by heap overflow and can be exploited by attackers to make remote denial of service.

How urgent is CVE-2020-14127?

Priority 47/100. High severity; Remotely exploitable, no login, no user action

Software pages

Xiaomi vulnerabilities

Related CVEs

CVE-2020-14125 HIGH 7.5 UPGRADE A denial of service vulnerability exists in some Xiaomi models of phones
CVE-2020-14123 HIGH 7.5 MITIGATE There is a pointer double free vulnerability in Some MIUI Services
CVE-2020-14122 MEDIUM 5.5 MITIGATE Some Xiaomi phones have information leakage vulnerabilities, and some of them may be able to forge a specific
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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