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CVE-2026-58598Patch(microsoft / windows_10_21h2)

LOWCVSS 7.0 · HIGH

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Patch microsoft windows_10_21h2 systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

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

microsoft CVEsBack to dashboard
1.0/ 10 priority

Sources & remediation

Patch / fix
Weakness type (CWE)
CWE-362CWE-416

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • windows_10_21h2
  • windows_10_22h2
  • windows_11_24h2
  • windows_11_25h2

Threat summary

  • Patch or workaround signal is available
  • 3 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 2 signals
  • Technical details provided in 2 signals
  • Disclosure: 1 classified signal
  • Peaked at 2 mentions on most recent observed day (2026-07-17)
  • 3 total mentions across 2 days

Affected systems

Vendors
microsoft
Products
windows_10_21h2windows_10_22h2windows_11_24h2windows_11_25h2windows_11_26h1

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-07-16: 1Mentions · 2026-07-17: 2Patch / Workaround · 2026-07-16: 1Patch / Workaround · 2026-07-17: 1Technical Details · 2026-07-17: 207-1607-17
Signal classification2 categories
Patch
266.7%
Disclosure
133.3%
Referenced assets1 URL
Classification over time
DateTotalLabels
2026-07-161
Patch1
2026-07-172
Disclosure1Patch1
Full discourse3 posts
  • The Dustin Childs@dustin_childs
    Patch

    As if Tuesday wasn't enough, #Microsoft released 4 patches yesterday: CVE-2026-56171: RDP Information Disclosure Vulnerability CVE-2026-58598: Backup Service EoP Vulnerability CVE-2026-58643: Admin Center Spoofing Vulnerability CVE-2026-59117: Windows Terminal RCE Vulnerability

    Post summary

    Microsoft released patches for four CVEs, addressing RDP information disclosure, backup service privilege escalation, admin center spoofing, and Windows Terminal remote code execution.

    001961.3K
    2.4K followersView on X
  • The Circuitry@thecircuitry_
    Disclosure

    Microsoft disclosed CVE-2026-58598, a high-severity race condition in the Windows Backup Engine. An authorized local attacker can exploit it to elevate privileges on multiple Windows 10 and Windows 11 releases. The flaw carries a CVSS score of 7.0. No patches appear in the July…

    Post summary

    Microsoft disclosed CVE-2026-58598, a high‑severity race condition in the Windows Backup Engine that permits local privilege escalation; no patch was available in the July release.

    0001076
    27 followersView on X
  • Windows Forum@windowsforum
    Patch

    🪟 Windows Backup Service has a privilege-escalation flaw—because even backups apparently need a security patch. If attackers already have local access, this can turn bad into worse. Patch what applies. https://windowsforum.com/threads/cve-2026-58598-patch-windows-backup-service-privilege-escalation.438987/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #PatchManagement #PrivilegeEscalation #Cve202658598 https://t.co/Wnrnuy9Zpr

    Post summary

    The post identifies a Windows Backup Service privilege‑escalation flaw (CVE‑2026‑58598) and directs readers to a patch.

    0000016
    1.3K followersView on X
CPE platform detail5 entries

5 of 5 entries

PartVendorProductVersionTarget SWTarget HW
OSmicrosoftwindows_10_21h2---
OSmicrosoftwindows_10_22h2---
OSmicrosoftwindows_11_24h2---
OSmicrosoftwindows_11_25h2---
OSmicrosoftwindows_11_26h1---

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