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Severity by source

Vendor (microsoft) PRIMARY
HIGH
qualitative
NVD
9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vuln.today AI
8.8 HIGH

Network-delivered malicious media (AV:N), no auth needed (PR:N), but the victim must open the file (UI:R); a heap RCE yields full C:H/I:H/A:H within the process (S:U).

3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (microsoft).

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

6
Analysis Updated
Jul 17, 2026 - 15:30 vuln.today
v2 (cvss_changed)
Re-analysis Queued
Jul 17, 2026 - 15:22 vuln.today
cvss_changed
Severity Changed
Jul 17, 2026 - 15:22 NVD
HIGH CRITICAL
CVSS changed
Jul 17, 2026 - 15:22 NVD
8.8 (HIGH) 9.8 (CRITICAL)
Analysis Generated
Jul 14, 2026 - 18:59 vuln.today
CVE Published
Jul 14, 2026 - 17:09 nvd
HIGH 8.8

DescriptionNVD

Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.

AnalysisAI

Remote code execution in Microsoft Windows Media Foundation allows an unauthenticated network attacker to run arbitrary code by triggering a heap-based buffer overflow (CWE-122) in the media-processing pipeline, per the CVSS:3.1 vector (AV:N/PR:N/UI:N). The flaw affects a broad range of client and server SKUs from Windows 10 1607 through Windows 11 26H1 and Windows Server 2016 through 2025. Microsoft has released patches; there is no public exploit identified at time of analysis and it is not listed in CISA KEV, with EPSS estimating a modest 0.83% 30-day exploitation probability.

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CVE-2026-57090 vulnerability details – vuln.today

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