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CVE-2026-26183Patch(microsoft / windows_server_2012)

LOWCVSS 7.8 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch microsoft windows_server_2012 systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Improper access control in Windows RPC API allows an authorized attacker to elevate privileges locally.

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1.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-284

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_server_2012
  • windows_server_2016
  • windows_server_2019
  • windows_server_2022

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 (2026-04-14); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
microsoft
Products
windows_server_2012windows_server_2016windows_server_2019windows_server_2022windows_server_2022_23h2windows_server_2025

2 versions affected across 6 products

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-04-14: 1Mentions · 2026-04-17: 1Patch / Workaround · 2026-04-14: 1Technical Details · 2026-04-14: 1Technical Details · 2026-04-17: 104-1404-17
Signal classification2 categories
Patch
150.0%
Disclosure
150.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-04-141
Patch1
2026-04-171
Disclosure1
Full discourse2 posts
  • CVE@CVEnew
    Disclosure

    CVE-2026-26183 Improper access control in Windows RPC API allows an authorized attacker to elevate privileges locally. https://www.cve.org/CVERecord?id=CVE-2026-26183

    Post summary

    The post announces CVE‑2026‑26183, noting that an improper access control in the Windows RPC API permits local privilege escalation, without providing further technical or mitigation details.

    00000136
    57.2K followersView on X
  • WindowsForum@windowsforum
    Patch

    🪟 “Confidence signal” for CVE-2026-26183? Translation: the bug is real, your RPC server is spicy, and Patch Tuesday is about to ruin someone’s weekend. Prioritize ASAP. https://windowsforum.com/threads/cve-2026-26183-microsoft-rpc-eop-confidence-signal-and-patch-prioritization.412723/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #PatchManagement #Cve202626183 #MicrosoftWindowsSecurity #RpcPrivilegeEscalation https://t.co/ihswlcArL4

    Post summary

    The tweet confirms CVE‑2026‑26183 is real and poses a privilege escalation risk on RPC servers, but it offers no PoC, exploit, or evidence of active exploitation, and it stresses the need to apply the upcoming Patch Tuesday update.

    0000030
    1.1K followersView on X
CPE platform detail7 entries

7 of 7 entries

PartVendorProductVersionTarget SWTarget HW
OSmicrosoftwindows_server_2012---
OSmicrosoftwindows_server_2012r2--
OSmicrosoftwindows_server_2016---
OSmicrosoftwindows_server_2019---
OSmicrosoftwindows_server_2022---
OSmicrosoftwindows_server_2022_23h2---
OSmicrosoftwindows_server_2025---

Explore more

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