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CVE-2026-45586, also referred to as GreenPlasma, is a local elevation-of-privilege vulnerability in the Windows Collaborative Translation Framework, including the CTFMON component. The flaw is caused by improper link resolution before file access, a link-following weakness that can allow file-system manipulation during privileged operations. Public reporting describes the issue as affecting file access handling in CTFMON and enabling a low-privileged or otherwise authorized local user to abuse the vulnerable path resolution behavior to escalate privileges. Successful exploitation can result in execution or actions in the security context of NT AUTHORITY\SYSTEM on the affected host.
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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.
If you can’t patch tonight, do this now.
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.
51 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Previously disclosed Windows vulnerability referenced only in passing among earlier exploit publications.
A privilege escalation vulnerability through CTFMON, mentioned as another prior NightmareEclipse release.
Another Microsoft-related zero-day mentioned only in passing in a list of disclosed bugs; no technical details are provided in this article.
A Windows component local privilege escalation vulnerability reported fixed in June 2026 updates.
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.