No exploitation reportedFix available

CVE-2021-21732

Q: Is CVE-2021-21732 actively exploited?

Active exploitation of CVE-2021-21732 has not been confirmed. Its EPSS score was 1.0% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2021-21732?

CVE-2021-21732 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

No exploitation reported by the sources we read.

Published2021-05-19
Fixed in2021.5.1

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A mobile phone of ZTE is impacted by improper access control vulnerability. Due to improper permission settings, third-party applications can read some files in the proc file system without authorization. Attackers could exploit this vulnerability to obtain sensitive information. This affects Axon 11 5G ZTE/CN_P725A12/P725A12:10/QKQ1.200816.002/20201116.175317:user/release-keys.

Timeline

dates in UTC

2021-05-1911:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-21732?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-21732?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Zte axon 11 5g firmwareversion to verify

Branch	Affected	Fixed in	Source
2021.5	< 2021.5.1	2021.5.1	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Zte axon 11 5g firmware to 2021.5.1

Advisories and patches

support.zte.com.cnVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.17.5read 2026-10-23
NVDCVSS 2.05read 2026-10-23
FIRST EPSSEPSS score1.0 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published: 2021-05-19
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2021-21732?

Is CVE-2021-21732 actively exploited?

Active exploitation of CVE-2021-21732 has not been confirmed. Its EPSS score was 1.0% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-21732?

CVE-2021-21732 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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