CVE Tools

CVE-2026-62908

Windows Backup Engine Elevation of Privilege Vulnerability

Published: Aug 11, 2026Updated: Aug 16, 2026 Sources: CVE List NVDCWE-362

Description

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

In plain language

AI Act now

CVE-2026-62908 is a Windows Backup feature bug where a standard user who can run a backup at the same time as other activity may be able to gain full control—serious for anyone using affected Windows versions, especially if untrusted users already have low-level access.

Executive summary

CVE-2026-62908 is a local elevation-of-privilege issue (race condition) in the Windows Backup Engine where concurrent backup-related execution mishandles shared resources, enabling a low-privileged, authenticated attacker to gain administrative control of the affected Windows system.

If affected, business impact
Full administrator controlTotal compromise of company PC/serversRansomware-enabling accessBusiness disruption from outages

What to do now

  1. Check whether your organization runs any of these systems: windows 10, windows 11, windows server 2012, windows server 2016, windows server 2019, windows server 2022, windows server 2025, windows server 2012 r2.
  2. Verify your installed Windows build/patch level on each affected machine and compare it to the fixed versions in the MSRC update guide for CVE-2026-62908.
  3. Upgrade/patch each affected machine to the fixed version that matches your Windows edition (exact target versions are listed in the “what to do” section below).
  4. If patching cannot be done immediately, restrict who can run backup/backup-related operations and remove low-level access from untrusted or temporary users until updates are applied.
Patch / advisory Usually a quick update

CVSS Vector Breakdown

AV:LAC:HPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High

Weaknesses

Affected Products

and 25 more affected products View all →

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

2

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-62908 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows