CVE-2020-0069: in the CISA KEV catalogue

Mediatek Multiple Chipsets Insufficient Input Validation Vulnerability. CISA added CVE-2020-0069 to the Known Exploited Vulnerabilities catalogue on 2021-11-03 with a default due date of 2022-05-03. Known ransomware campaign use: Unknown. Forensic triage flag: No.

Multiple MediaTek chipsets contain an insufficient input validation vulnerability and have missing SELinux restrictions in the Command Queue drivers ioctl handlers. This causes an out-of-bounds write leading to privilege escalation. This vulnerability was observed chained with CVE-2019-2215 and CVE-2020-0041 under exploit chain "AbstractEmu." (CISA description)

Vendor / product: MediaTek Multiple Chipsets
CWE: CWE-787
CISA required action: Apply updates per vendor instructions.
EPSS: 1.4%, percentile 72 (scored 2026-11-03)

EPSS puts about 1.4 in 100 odds (1.4%) on exploitation activity being observed in the next 30 days. Its score is higher than or equal to that of 72% of scored CVEs. This is a model estimate about exploitation anywhere, not about your environment.

Vendor and reference links (from CISA)

https://nvd.nist.gov/vuln/detail/CVE-2020-0069

Your own deadline under CISA BOD 26-04 depends on exposure, automatability and technical impact: work it out with the BOD 26-04 calculator.

Data dates. CISA KEV catalogue version 2026.11.03, released 2026-11-03, 1,767 entries (checked 2026-11-03). EPSS model v2026.06.15, scored 2026-11-03, 399,388 CVEs. Sources: CISA and FIRST (EPSS by FIRST; scores generated by Empirical Security). Copied to our own database and refreshed automatically; if a refresh fails, the previous copy keeps serving with its own date.

Frequently asked questions

Is CVE-2020-0069 in the CISA KEV catalogue?

Yes. CISA added CVE-2020-0069 (Mediatek Multiple Chipsets Insufficient Input Validation Vulnerability) to the Known Exploited Vulnerabilities catalogue on 2021-11-03. CISA's default due date for it is 2022-05-03.

Is CVE-2020-0069 used in ransomware attacks?

CISA marks known ransomware campaign use as Unknown for CVE-2020-0069. That means CISA lacks confirmation, not that ransomware groups do not use it.

What should I do about CVE-2020-0069?

CISA's required action: Apply updates per vendor instructions.

Sources

CISA, Known Exploited Vulnerabilities Catalog (accessed 2026-11-03)
FIRST, Exploit Prediction Scoring System (EPSS) (EPSS by FIRST; scores generated by Empirical Security)
NVD record for CVE-2020-0069