EUVD-2026-44281
GHSA-h2rv-pm3g-44xm
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Network RDP access with low-privilege credentials is the sole prerequisite; only confidentiality is impacted as uninitialized memory is disclosed, not modified.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
2DescriptionCVE.org
Use of uninitialized resource in Windows RDP allows an authorized attacker to disclose information over a network.
AnalysisAI
Information disclosure via uninitialized resource use in Windows Remote Desktop Protocol (RDP) exposes sensitive memory contents to authenticated remote attackers across a wide range of Microsoft Windows desktop and server editions. The CVSS vector (AV:N/AC:L/PR:L/UI:N) confirms this is exploitable over the network by any low-privileged authenticated user with no complexity or interaction requirements, yielding high confidentiality impact. No public exploit code or CISA KEV listing has been identified at time of analysis, but the low barrier to exploitation and the ubiquitous deployment of Windows RDP make this a meaningful patching priority.
Technical ContextAI
The root cause is CWE-908 (Use of Uninitialized Resource): the Windows RDP service reads from or transmits memory that has not been properly initialized before use, potentially leaking heap or stack contents to a connected client. RDP (Remote Desktop Protocol) operates over TCP/3389 and is a core Windows feature for remote administration and virtual desktop infrastructure. The affected CPE strings span Windows 10 (versions 1607 through 22H2), Windows 11 (versions 24H2, 25H2, 26H1), and Windows Server 2012 through 2012 R2 per NVD CPE data; Microsoft's own tags extend the scope to Server 2016, 2019, 2022, and 2025, indicating the flaw is present across the entire supported and legacy Windows ecosystem. Uninitialized resource bugs in protocol implementations can expose cryptographic material, session tokens, kernel pointers, or other process memory depending on allocation timing.
RemediationAI
The primary remediation is to apply the vendor-released patch distributed by Microsoft; the advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57982 provides the specific KB articles and update packages for each affected Windows version. Exact patched build versions are not independently confirmed from the available input data and must be verified against the MSRC advisory. Where patching cannot be applied immediately, organizations should restrict RDP (TCP/3389) exposure to trusted networks and VPN-gated endpoints via host-based firewall rules and network segmentation, reducing the attacker pool to already-authenticated internal users. Enabling Network Level Authentication (NLA) for all RDP sessions ensures that authentication occurs before a full RDP session is established, which limits the attack surface though it does not eliminate the flaw since PR:L is already required. Disabling RDP entirely on systems where remote desktop access is not operationally required eliminates the attack surface completely with the trade-off of losing remote management capability.
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Same weakness CWE-908 – Use of Uninitialized Resource
View allSame technique Information Disclosure
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External POC / Exploit Code
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