Out-of-bounds Read in Microsoft 365 Apps For Enterprise

CVE-2023-23399

Microsoft Excel Remote Code Execution Vulnerability

Vulnerability class: Buffer Overflow

EPSS: 0.073 (91.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2023-23399?
CVE-2023-23399 is a high-severity vulnerability in Microsoft 365 Apps For Enterprise, classified under Out-of-bounds Read. CVSS score: 7.8/10. Published 2023-03-14.
How severe is CVE-2023-23399?
High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2023-23399 known to be exploited?
3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.