7.5

CVE-2026-97830: microsoft windows_11_23h2 Double Free

CVSS: 7.5v3.1HighAnalyzed
Published 13-10-2026Last modified 16-10-2026
Open JSON

Vulnerability summary

CVE-2026-97830 is a high (CVSS 7.5) Double Free vulnerability in microsoft windows_11_23h2. EPSS estimates a 0.87% chance of exploitation in the next 30 days, higher than 58% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.87%
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 Windows Internet Information Services allows an unauthorized attacker to deny service over a network.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.87%

Chance of exploitation in the next 30 days

Percentile

58%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

14-10-202618-10-2026
EPSS score
0.87%

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

Microsoft13 products

1 vendor · 13 products

References

1 links