What is CVE-2020-1555?

CVE-2020-1555 is a high-severity vulnerability in Microsoft Chakracore, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2020-08-17.

How severe is CVE-2020-1555?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Microsoft Chakracore

CVE-2020-1555

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Microsoft Edge (HTML-based). The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code…

Vulnerability class: Buffer Overflow

EPSS: 0.045 (90.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Microsoft Chakracore — versions 0
Microsoft Edge
Microsoft Edge (Edgehtml-based) — versions 1.0..0
Microsoft Windows_10 — versions 1709, 1803, 1809
Microsoft Windows_server_2019

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

secure@microsoft.com (Patch, x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2020-1555?: CVE-2020-1555 is a high-severity vulnerability in Microsoft Chakracore, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2020-08-17.
How severe is CVE-2020-1555?: High severity. CVSS v3 base score is 8.8 out of 10.