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CVE-2026-25166Disclosure(microsoft / windows_10_1607)

LOWCVSS 7.8 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch microsoft windows_10_1607 systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Deserialization of untrusted data in Windows System Image Manager allows an authorized attacker to execute code locally.

microsoft CVEsBack to dashboard
1.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-502

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_1607
  • windows_10_1809
  • windows_10_21h2
  • windows_10_22h2

Threat summary

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

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 2 signals
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-03-17); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
microsoft
Products
windows_10_1607windows_10_1809windows_10_21h2windows_10_22h2windows_11_23h2windows_11_24h2windows_11_25h2windows_11_26h1windows_server_2016windows_server_2019

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-03-17: 1Mentions · 2026-08-04: 1Patch / Workaround · 2026-08-04: 1Technical Details · 2026-03-17: 1Technical Details · 2026-08-04: 103-1708-04
Signal classification2 categories
Disclosure
150.0%
Patch
150.0%
Referenced assets3 URLs
Classification over time
DateTotalLabels
2026-03-171
Disclosure1
2026-08-041
Patch1
Full discourse2 posts
  • bohops@bohops
    Patch

    Deserialization strikes again for a WDAC bypass in imgmgr.exe (cc Dr. Tim Baker at dotSec) https://www.dotsec.com/insecure-deserialisation-app-control-bypass/ Fixed by Microsoft as a "remote code execution" vulnerability (CVE-2026-25166) https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-25166

    Post summary

    Microsoft has released a patch for CVE-2026-25166, a deserialization-based RCE in imgmgr.exe; no proof‑of‑concept or active exploitation is reported.

    127081436.8K
    15.0K followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-25166 Deserialization of untrusted data in Windows System Image Manager allows an authorized attacker to execute code locally. https://www.cve.org/CVERecord?id=CVE-2026-25166

    Post summary

    The statement announces a new Windows System Image Manager vulnerability that permits local code execution via deserialization of untrusted data, providing a link to the official CVE record.

    00000176
    56.7K followersView on X
CPE platform detail22 entries

22 of 22 entries

PartVendorProductVersionTarget SWTarget HW
OSmicrosoftwindows_10_1607--x64
OSmicrosoftwindows_10_1607--x86
OSmicrosoftwindows_10_1809--x64
OSmicrosoftwindows_10_1809--x86
OSmicrosoftwindows_10_21h2--arm64
OSmicrosoftwindows_10_21h2--x64
OSmicrosoftwindows_10_21h2--x86
OSmicrosoftwindows_10_22h2--arm64
OSmicrosoftwindows_10_22h2--x64
OSmicrosoftwindows_10_22h2--x86
OSmicrosoftwindows_11_23h2--arm64
OSmicrosoftwindows_11_23h2--x64
OSmicrosoftwindows_11_24h2--arm64
OSmicrosoftwindows_11_24h2--x64
OSmicrosoftwindows_11_25h2--arm64
OSmicrosoftwindows_11_25h2--x64
OSmicrosoftwindows_11_26h1--arm64
OSmicrosoftwindows_11_26h1--x64
OSmicrosoftwindows_server_2016---
OSmicrosoftwindows_server_2019---
OSmicrosoftwindows_server_2022---
OSmicrosoftwindows_server_2022_23h2---

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