What is CVE-2020-11834?

CVE-2020-11834 is a medium-severity vulnerability in Oppo Find X2 Pro, classified under Out-of-bounds Write. CVSS score: 5.5/10. Published 2020-12-31.

How severe is CVE-2020-11834?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Buffer overflow in Oppo Find X2 Pro

CVE-2020-11834

In /SM8250_Q_Master/android/vendor/oppo_charger/oppo/oppo_vooc.c, the function proc_fastchg_fw_update_write in proc_fastchg_fw_update_write does not check the parameter len, resulting in a vulnerability.

Vulnerability class: Buffer Overflow

Published 2020-12-31 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (23.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

Affected products

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

security.oppo.com/en/noticedetails.html (Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2020-11834?: CVE-2020-11834 is a medium-severity vulnerability in Oppo Find X2 Pro, classified under Out-of-bounds Write. CVSS score: 5.5/10. Published 2020-12-31.
How severe is CVE-2020-11834?: Medium severity. CVSS v3 base score is 5.5 out of 10.