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CVE-2026-62897 is an integer overflow or wraparound vulnerability in .NET Windows Presentation Foundation native rendering functionality. During layout transformations and image-metadata processing, buffer-size calculations using width, height, and bytes per pixel can use unchecked 32-bit unsigned arithmetic. An overflow can yield an undersized allocation while subsequent operations continue to use the original dimensions, resulting in an out-of-bounds write and heap corruption. Microsoft classifies the issue as a .NET Framework remote code execution vulnerability, although the available CVSS vector identifies a local attack vector.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
21 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An integer overflow or wraparound vulnerability in .NET Framework enabling local code execution.
An integer-overflow or wraparound flaw in .NET Framework that enables unauthorized local code execution.
An integer-overflow or wraparound vulnerability in .NET Framework that permits an unauthorized attacker to execute code locally.
A Microsoft .NET Framework vulnerability included in this plugin's CVE references; the content provides no technical description or impact details.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.