What is CVE-2022-45126?

CVE-2022-45126 is a medium-severity vulnerability in Openatom Openharmony, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 4.0/10. Published 2023-01-09.

How severe is CVE-2022-45126?

Medium severity. CVSS v3 base score is 4.0 out of 10.

Buffer overflow in Openatom Openharmony

CVE-2022-45126

Kernel subsystem within OpenHarmony-v3.1.4 and prior versions in kernel_liteos_a has a kernel stack overflow vulnerability when call SysClockGettime. 4 bytes padding data from kernel stack are copied to user space incorrectly and leaked.

Vulnerability class: Buffer Overflow

Published 2023-01-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.002 (6.9th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 6.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Openatom Openharmony
Openharmony — versions 3.1.0, 3.0.0, 1.1.0

Weakness classification (CWE)

References

gitee.com/openharmony/security/blob/master/en/security-disclosure/2022/2022-12… (Third Party Advisory)

Frequently asked questions

What is CVE-2022-45126?: CVE-2022-45126 is a medium-severity vulnerability in Openatom Openharmony, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 4.0/10. Published 2023-01-09.
How severe is CVE-2022-45126?: Medium severity. CVSS v3 base score is 4.0 out of 10.