CVE-2026-45648Disclosure(microsoft / windows_server_2022)

MEDIUMCVSS 8.8 · HIGH

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

Immediate actions

  • Patch microsoft windows_server_2022 systems immediately
  • Assume compromise if assets are exposed

Recommended action window: Immediate (within 24h)

NVD description

Stack-based buffer overflow in Active Directory Domain Services allows an authorized attacker to execute code over a network.

4.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-121

Priority

MEDIUM

Exploitation

ACTIVE

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_server_2022
  • windows_server_2025

Threat summary

  • Active exploitation appears in 1 classified signals
  • Patch or workaround signal is available
  • 6 mentions across 5 observed days
  • Momentum state: stable

What's happening

  • Active exploitation reported across 1 signal
  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 6 signals
  • Disclosure: 3 classified signals
  • General: 1 classified signal
  • Peaked 2d ago at 2 mentions (2026-06-14); latest day: 1
  • 6 total mentions across 5 days

Affected systems

Vendors
Products
windows_server_2022windows_server_2025

Deep dive

Activity timeline6 mentions / 5d
01122Mentions · 2026-06-10: 1Mentions · 2026-06-13: 1Mentions · 2026-06-14: 2Mentions · 2026-06-15: 1Mentions · 2026-07-11: 1Active Exploitation · 2026-06-10: 1Patch / Workaround · 2026-07-11: 1Technical Details · 2026-06-10: 1Technical Details · 2026-06-13: 1Technical Details · 2026-06-14: 2Technical Details · 2026-06-15: 1Technical Details · 2026-07-11: 106-1006-1306-1406-1507-11
Signal classification4 categories
Disclosure
350.0%
Active Exploitation
116.7%
General
116.7%
Patch
116.7%
Referenced assets3 URLs
Classification over time
DateTotalLabels
2026-06-101
Active Exploitation1
2026-06-131
Disclosure1
2026-06-142
Disclosure2
2026-06-151
General1
2026-07-111
Patch1
Full discourse6 posts
  • ゆぅさん@YY20424277
    Disclosure

    【3軸解説】「マイクロソフトのMicrosoft Windows Server 2022等の複数製品におけるスタックベースのバッファオーバーフローの脆弱性(CVE-2026-45648)」を、背景 / 目的 / 効果 の 3 軸で読み解きます。 背景/目的/効果の3軸で読み解きました。 #セキュリティ #若手コンサル ▶ note メンバーシップ: https://note.com/yuusan_security/membership

    Post summary

    The post delivers an analytic overview of CVE‑2026‑45648, a stack‑based buffer overflow in Microsoft Windows Server 2022, but omits exploitation details, patches, or evidence of active usage.

    0001071
    858 followersView on X
  • IntegSec@integ_sec
    Patch

    CVE-2026-45648: Active Directory Domain Services Buffer Overflow - What It Means for Your Business and How to Respond https://hubs.li/Q04pfn370

    Post summary

    The post highlights CVE-2026-45648, detailing an Active Directory Domain Services buffer overflow and guiding readers on patching and mitigation measures.

    0000042
    31 followersView on X
  • ゆぅさん@YY20424277
    General

    【3軸解説】「マイクロソフトのMicrosoft Windows Server 2022等の複数製品におけるスタックベースのバッファオーバーフローの脆弱性(CVE-2026-45648)」を、背景 / 目的 / 効果 の 3 軸で読み解きます。 背景/目的/効果の3軸で読み解きました。 #セキュリティ #若手コンサル ▶ note メンバーシップ: https://note.com/yuusan_security/membership

    Post summary

    The post offers an overview of CVE‑2026‑45648, a stack‑based buffer overflow in Microsoft Windows Server 2022, but provides no evidence of PoC, exploit, patch, or active exploitation.

    0000068
    858 followersView on X
  • ゆぅさん@YY20424277
    Disclosure

    【3軸解説】「マイクロソフトのMicrosoft Windows Server 2022等の複数製品におけるスタックベースのバッファオーバーフローの脆弱性(CVE-2026-45648)」を、背景 / 目的 / 効果 の 3 軸で読み解きます。 背景/目的/効果の3軸で読み解きました。 #セキュリティ #若手コンサル ▶ note メンバーシップ: https://note.com/yuusan_security/membership

    Post summary

    The post offers a high‑level explanation of CVE‑2026‑45648 as a stack‑based buffer overflow in Microsoft Windows Server 2022, without providing PoC, exploit, or patch information.

    0000076
    858 followersView on X
  • ゆぅさん@YY20424277
    Disclosure

    【3軸解説】「マイクロソフトのMicrosoft Windows Server 2022等の複数製品におけるスタックベースのバッファオーバーフローの脆弱性(CVE-2026-45648)」を、背景 / 目的 / 効果 の 3 軸で読み解きます。 背景/目的/効果の3軸で読み解きました。 #セキュリティ #若手コンサル ▶ note メンバーシップ: https://note.com/yuusan_security/membership

    Post summary

    The post provides an analytical overview of Microsoft Windows Server 2022’s stack‑based buffer overflow (CVE‑2026‑45648), detailing its background, purpose, and impact, without offering an exploit, patch, or claim of active exploitation.

    0000068
    858 followersView on X
  • Aviatrix Threat Research Center@aviatrixtrc
    Active Exploitation

    Attackers are chaining HTTP.sys exploits (CVE-2026-47291) with Active Directory privilege escalation (CVE-2026-45648) to achieve full domain compromise. TRC analysis shows lateral movement across networks after initial web server breach. Runtime segmentation helps contain post-compromise activity. #ZeroDay 🔗 Full TRC analysis: https://aviatrix.ai/threat-research-center/microsoft-june-2026-patch-tuesday-cve-2026-49160

    Post summary

    The post reports that attackers are actively chaining HTTP.sys and Active Directory exploits to fully compromise domains, highlighting real-world exploitation and lateral movement.

    0000066
    1.9K followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
OSmicrosoftwindows_server_2022---
OSmicrosoftwindows_server_2025--x64

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