9.8

CVE-2026-97749: microsoft 365_apps Double Free

CVSS: 9.8v3.1CriticalAnalyzed
Published 13-10-2026Last modified 16-10-2026
Open JSON

Vulnerability summary

CVE-2026-97749 is a critical (CVSS 9.8) Double Free vulnerability in microsoft 365_apps. EPSS estimates a 0.98% chance of exploitation in the next 30 days, higher than 61.4% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.98%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 13-10-2026
    PublishedVulnerability first disclosed.
  2. 16-10-2026
    Last modifiedVulnerability information updated.

Description

Double free in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.98%

Chance of exploitation in the next 30 days

Percentile

61%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

14-10-202618-10-2026
EPSS score
0.98%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Microsoft6 products

1 vendor · 6 products

References

1 links