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CVE-2016-7255Active Exploitation(microsoft / windows_10_1507)

MEDIUMCVSS 7.8 · HIGHCISA KEV

Exploitation ongoing with high activity in latest observed window (1 mentions)

Immediate actions

  • Prioritize remediation for microsoft windows_10_1507 systems immediately
  • Assume compromise if assets are exposed
  • Track advisory updates for patch or workaround availability

Recommended action window: Immediate (within 24h)

NVD description

The kernel-mode drivers in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, and 1607, and Windows Server 2016 allow local users to gain privileges via a crafted application, aka "Win32k Elevation of Privilege Vulnerability."

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4.0/ 10 priority

Sources & remediation

Listed in the CISA Known Exploited Vulnerabilities catalog. Federal remediation due date: 2022-05-03. Apply updates per vendor instructions.

Patch / fix
Exploit / PoC references
Vendor / third-party advisories
Other references

Priority

MEDIUM

Exploitation

ACTIVE

PoC

YES

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_1507
  • windows_10_1511
  • windows_10_1607
  • windows_7

Threat summary

  • Active exploitation appears in 2 classified signals
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Active exploitation reported across 2 signals
  • Technical details provided in 1 signal
  • Peaked 1d ago at 1 mentions (2026-06-26); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
microsoft
Products
windows_10_1507windows_10_1511windows_10_1607windows_7windows_8.1windows_rt_8.1windows_server_2008windows_server_2012windows_server_2016windows_vista

2 versions affected across 10 products

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-06-26: 1Mentions · 2026-09-09: 1Active Exploitation · 2026-06-26: 1Active Exploitation · 2026-09-09: 1Technical Details · 2026-06-26: 106-2609-09
Signal classification1 categories
Active Exploitation
2100.0%
Full discourse2 posts
  • OS Dev@OSdev_
    Active Exploitation

    CVE-2016-7255 is a good case study in Windows GUI internals. The vulnerability resided in win32k.sys, where insufficient validation in "xxxNextWindow" allowed an attacker to turn a user-controlled "tagWND" field into an arbitrary kernel write primitive. It was exploited in the wild for local privilege escalation and is worth studying to understand Win32k, USER objects, tagWND, and how seemingly small validation bugs can become powerful exploitation primitives.

    Post summary

    The post confirms CVE‑2016‑7255 was actively exploited for local privilege escalation and provides technical details of the vulnerability, but does not mention a PoC, exploit code, patch, or debunking claim.

    115076312.9K
    4.8K followersView on X
  • kokumօtօ@__kokumoto
    Active Exploitation

    米国サイバーセキュリティ・社会基盤安全保障庁(CISA)の既知の悪用された脆弱性カタログが更新。以下の脆弱性についてランサムウェアによる悪用が確認された。 - CVE-2022-41352 (Zimbra Collaboration Suite (ZCS)) - CVE-2016-7255 (Windows) - CVE-2019-0859 (Windows) https://t.co/VS1Zw6lLLO

    Post summary

    The update from CISA confirms that ransomware actors are actively exploiting CVE-2022-41352, CVE-2016-7255, and CVE-2019-0859 in the wild.

    00022766
    7.8K followersView on X
CPE platform detail12 entries

12 of 12 entries

PartVendorProductVersionTarget SWTarget HW
OSmicrosoftwindows_10_1507---
OSmicrosoftwindows_10_1511---
OSmicrosoftwindows_10_1607---
OSmicrosoftwindows_7---
OSmicrosoftwindows_8.1---
OSmicrosoftwindows_rt_8.1---
OSmicrosoftwindows_server_2008---
OSmicrosoftwindows_server_2008r2--
OSmicrosoftwindows_server_2012---
OSmicrosoftwindows_server_2012r2--
OSmicrosoftwindows_server_2016---
OSmicrosoftwindows_vista---

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