CVE-2026-58598

highpriority · track · 0EPSS 0.002 · 10 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.20% (10th) EPSS

CVSS 7 · high

Is it mine?

41 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

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

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedWindows 10 Version 21H2 for 32-bit Systemsmsrc_csaf
10.0.19044.7548:Security Update:https://support.microsoft.com/help/5099539
https://support.microsoft.com/help/5099539
FixedWindows 10 Version 21H2 for ARM64-based Systemsmsrc_csaf
10.0.19044.7548:Security Update:https://support.microsoft.com/help/5099539
https://support.microsoft.com/help/5099539
FixedWindows 10 Version 21H2 for x64-based Systemsmsrc_csaf
10.0.19044.7548:Security Update:https://support.microsoft.com/help/5099539
https://support.microsoft.com/help/5099539
FixedWindows 10 Version 22H2 for 32-bit Systemsmsrc_csaf
10.0.19045.7548:Security Update:https://support.microsoft.com/help/5099539
https://support.microsoft.com/help/5099539
FixedWindows 10 Version 22H2 for ARM64-based Systemsmsrc_csaf
10.0.19045.7548:Security Update:https://support.microsoft.com/help/5099539
https://support.microsoft.com/help/5099539
FixedWindows 10 Version 22H2 for x64-based Systemsmsrc_csaf
10.0.19045.7548:Security Update:https://support.microsoft.com/help/5099539
https://support.microsoft.com/help/5099539
FixedWindows 11 Version 24H2 for ARM64-based Systemsmsrc_csaf
10.0.26100.8875:Security Update:https://support.microsoft.com/help/5101650
https://support.microsoft.com/help/5101650
FixedWindows 11 Version 24H2 for x64-based Systemsmsrc_csaf
10.0.26100.8875:Security Update:https://support.microsoft.com/help/5101650
https://support.microsoft.com/help/5101650
FixedWindows 11 Version 25H2 for ARM64-based Systemsmsrc_csaf
10.0.26200.8875:Security Update:https://support.microsoft.com/help/5101650
https://support.microsoft.com/help/5101650
FixedWindows 11 Version 25H2 for x64-based Systemsmsrc_csaf
10.0.26200.8875:Security Update:https://support.microsoft.com/help/5101650
https://support.microsoft.com/help/5101650
FixedWindows 11 Version 26H1 for ARM64-based Systemsmsrc_csaf
10.0.28000.2525:Security Update:https://support.microsoft.com/help/5101649
https://support.microsoft.com/help/5101649
FixedWindows 11 version 26H1 for x64-based Systemsmsrc_csaf
10.0.28000.2525:Security Update:https://support.microsoft.com/help/5101649
https://support.microsoft.com/help/5101649

cvss

Technical severity, 0–10. One row per scoring source.

7.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.4–7

v3.17highAV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17highCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · ENISA EU

v3.17highCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · secure@microsoft.com USexploitability 1 · impact 5.9

v3.16.4mediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.17highCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · Microsoft Security Response Center US

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-362USCWE-362USCWE-362USCWE-416USCWE-416US

affected products (41)

Products and version ranges known to be affected.

Microsoft Windows 10all versionscert_bundDEcpe:/o:microsoft:windows_10:-
Microsoft Windows 11all versionscert_bundDEcpe:/o:microsoft:windows_11:-
Microsoft Windows 10 Version 21H210.0.19044.0 → 10.0.19044.7548enisa_euvdEU
Microsoft Windows 10 Version 22H210.0.19045.0 → 10.0.19045.7548enisa_euvdEU
Microsoft Windows 11 Version 24H210.0.26100.0 → 10.0.26100.8875enisa_euvdEU
Microsoft Windows 11 Version 25H210.0.26200.0 → 10.0.26200.8875enisa_euvdEU
Microsoft Windows 11 version 26H110.0.28000.0 → 10.0.28000.2525enisa_euvdEU
Microsoft Corp Windows 10 21H2≤ 10.0.19044.7548fstec_bduRU
Microsoft Corp Windows 10 22H2≤ 10.0.19045.7548fstec_bduRU
Microsoft Corp Windows 11 24H2≤ 10.0.26100.8875fstec_bduRU
Microsoft Corp Windows 11 25H2≤ 10.0.26100.8875fstec_bduRU
Microsoft Corp Windows 11 26H1≤ 10.0.28000.2525fstec_bduRU
Microsoft Windows 10 Version 21H2 for 32-bit Systemsall versionsfixedmsrc_csafUS
Microsoft Windows 10 Version 21H2 for 32-bit Systems< 10.0.19044.7548msrc_csafUS
Microsoft Windows 10 Version 21H2 for ARM64-based Systemsall versionsfixedmsrc_csafUS
Microsoft Windows 10 Version 21H2 for ARM64-based Systems< 10.0.19044.7548msrc_csafUS
Microsoft Windows 10 Version 21H2 for x64-based Systemsall versionsfixedmsrc_csafUS
Microsoft Windows 10 Version 21H2 for x64-based Systems< 10.0.19044.7548msrc_csafUS
Microsoft Windows 10 Version 22H2 for 32-bit Systemsall versionsfixedmsrc_csafUS
Microsoft Windows 10 Version 22H2 for 32-bit Systems< 10.0.19045.7548msrc_csafUS

showing 20 of 41

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-2401Microsoft Windows: Mehrere SchwachstellenDeutsch2026-07-19csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen im Microsoft Windows Backup Service, Microsoft Windows Admin Center und Microsoft Windows Remote Desktop Web Client ausnutzen, um Informationen offenzulegen und um erweiterte Rechte zu erlangen.
msrc_CVE-2026-58598Windows Backup Service Elevation of Privilege Vulnerability2026-07-16csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund msrc_csaf NVD CVE.org MITRE

published 2026-07-16modified 2026-07-22

references (3)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

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