What is CVE-2019-0770?

CVE-2019-0770 is a high-severity vulnerability in Microsoft Edge, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2019-04-09.

How severe is CVE-2019-0770?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Microsoft Edge

CVE-2019-0770

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Microsoft Edge, aka 'Scripting Engine Memory Corruption Vulnerability'. This CVE ID is unique from CVE-2019-0609, CVE-2019-0639, CVE-2019-0680, CVE-2019-0769, CVE-2019-0771, CVE-2019-0773, CVE-2019-0783.

Vulnerability class: Buffer Overflow

Published 2019-04-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.081 (94.8th percentile), scored 2026-10-25.

Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.081 · newest: 0.081 · change: 0.000

Affected products

Microsoft Edge
Microsoft Edge — versions Windows 10 for 32-bit Systems, Windows 10 for x64-based Systems, Windows Server 2016
Microsoft Windows 10 — versions 1607, 1703, 1709
Microsoft Windows Server 2016

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0770 (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2019-0770?: CVE-2019-0770 is a high-severity vulnerability in Microsoft Edge, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2019-04-09.
How severe is CVE-2019-0770?: High severity. CVSS v3 base score is 7.5 out of 10.