What is CVE-2023-20819?

CVE-2023-20819 is a critical-severity vulnerability in Mediatek Lr11, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2023-10-02.

How severe is CVE-2023-20819?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2023-20819 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Mediatek Lr11

CVE-2023-20819

In CDMA PPP protocol, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege with no additional execution privilege needed. User interaction is not needed for exploitation…

Vulnerability class: Buffer Overflow

EPSS: 0.006 (44.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

Public proof-of-concept exploits

References

security@mediatek.com (Vendor Advisory)

Frequently asked questions

What is CVE-2023-20819?: CVE-2023-20819 is a critical-severity vulnerability in Mediatek Lr11, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2023-10-02.
How severe is CVE-2023-20819?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2023-20819 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.