What is CVE-2018-8123?

CVE-2018-8123 is a medium-severity vulnerability in Microsoft Edge, classified under Information Disclosure. CVSS score: 4.3/10. Published 2018-05-09.

How severe is CVE-2018-8123?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Information disclosure in Microsoft Edge

CVE-2018-8123

An information disclosure vulnerability exists when Microsoft Edge improperly handles objects in memory, aka "Microsoft Edge Information Disclosure Vulnerability." This affects Microsoft Edge. This CVE ID is unique from CVE-2018-1021.

Vulnerability class: Information Disclosure

Published 2018-05-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.061 (93.2th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 93.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.062 · newest: 0.061 · change: -0.001

Affected products

Microsoft Edge
Microsoft Edge — versions Windows 10 Version 1709 for 32-bit Systems, Windows 10 Version 1709 for x64-based Systems

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8123 (Patch, Vendor Advisory)
www.securityfocus.com/bid/103965 (VDB Entry, Third Party Advisory, vdb-entry)
www.securitytracker.com/id/1040844 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2018-8123?: CVE-2018-8123 is a medium-severity vulnerability in Microsoft Edge, classified under Information Disclosure. CVSS score: 4.3/10. Published 2018-05-09.
How severe is CVE-2018-8123?: Medium severity. CVSS v3 base score is 4.3 out of 10.