CVE-2026-42991

HIGH

CVSS v3.1: 7.8

No user interactionRace ConditionUse After FreeVendor advisory ref

Source data as of:

At a glance

Severity
HIGH
CVSS
7.8 v3.1 · NVD
EPSS
EPSS not provided by FIRST.org for this CVE
CISA KEV
No
Type
Race Condition, Use After Free · NVD CWE
Attack conditions (CVSS vector)
No user interaction · Source: NVD Vector
Published
2026-06-09 · Modified: 2026-06-09
References
Jump to references (1)

CVSS / EPSS / KEV

CVSS v3.1 7.8 / 10 HIGH Source: NVD
EPSS — EPSS not provided by FIRST.org for this CVE Source: FIRST.org
CISA KEV No Source: CISA

Source — CVSS: NVD · EPSS: FIRST.org · KEV: CISA. Data & Sources

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.

Record details

CVE ID
CVE-2026-42991
CVSS (v3.1)
7.8 (HIGH)
Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Exploitability subscore
1.1
Impact subscore
6.0
CISA KEV
No
Weakness (CWE)
CWE-362, CWE-416
Affected configurations (CPE)
0
Published
2026-06-09
Modified
2026-06-09
Status
Awaiting Analysis

References

Reference URLs as listed by NVD, grouped by a mechanical match on the link's host/pattern. Labels describe the link type only.

Related records

Other records sharing a factual facet, for cross-reference. A descriptive neighbourhood — ordering does not imply priority and is not a recommendation.

Same weakness type (CWE)

CVE-2025-10263 CRITICAL CVSS 9.1 CVE-2026-11677 HIGH CVSS 8.3 CVE-2026-42977 HIGH CVSS 7.8 CVE-2026-42978 HIGH CVSS 7.8

Published the same year

CVE-2026-10520 CRITICAL CVSS 10.0 CVE-2026-11429 CRITICAL CVSS 10.0 CVE-2026-47938 CRITICAL CVSS 10.0 CVE-2026-48303 CRITICAL CVSS 10.0
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