CVE-2026-88076

HIGH
Published Oct 13, 2026 Modified Oct 16, 2026 CWE-476

Description

Null pointer dereference in Windows Installer allows an authorized attacker to elevate privileges locally.

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CVSS v3.1 Score

7.0
HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0025
Probability of exploitation
0.16%
Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-476 CWE-476

Affected Products

Vendor Product
microsoft windows_10_1607
microsoft windows_10_1607
microsoft windows_10_1809
microsoft windows_10_1809
microsoft windows_10_21h2
microsoft windows_10_21h2
microsoft windows_10_21h2
microsoft windows_10_22h2
microsoft windows_10_22h2
microsoft windows_10_22h2
microsoft windows_11_23h2
microsoft windows_11_23h2
microsoft windows_11_24h2
microsoft windows_11_24h2
microsoft windows_11_25h2
microsoft windows_11_25h2
microsoft windows_11_26h1
microsoft windows_11_26h1
microsoft windows_11_26h2
microsoft windows_11_26h2
microsoft windows_server_2012
microsoft windows_server_2012
microsoft windows_server_2016
microsoft windows_server_2019
microsoft windows_server_2022
microsoft windows_server_2025

References

Frequently Asked Questions

What is CVE-2026-88076? +
Null pointer dereference in Windows Installer allows an authorized attacker to elevate privileges locally. It has a CVSS v3.1 base score of 7.0 (HIGH).
How severe is CVE-2026-88076? +
CVE-2026-88076 has a CVSS v3.1 score of 7.0 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0025, placing it in the 0th percentile for exploitation probability.
What products are affected by CVE-2026-88076? +
CVE-2026-88076 affects products from microsoft, specifically: windows_10_1607, windows_10_1809, windows_10_21h2, windows_10_22h2, windows_11_23h2, windows_11_24h2, windows_11_25h2, windows_11_26h1, windows_11_26h2, windows_server_2012, windows_server_2016, windows_server_2019, windows_server_2022, windows_server_2025. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2026-88076? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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