Type Vulnerability
Nightmare Eclipse Drops Windows Zero-Day Exploit ‘SignDrop’
1 source
At a glance
Low
30-day window, from the last update
Evidence-weighted, not popularity
Why Low
Low rather than Medium: UK relevance is 40 of 100, little UK-specific signal so far.
Briefing
There is no written leader briefing for this story yet. The summary below says what is known so far.
Next steps
- Confirm whether this affects systems or suppliers in your estate
No technical write-up beyond the summary below yet.
Next steps
- Review the advisory against your asset inventory and patch cadence
Summary
- Exploitation in the wild is not confirmed; treat this as a prioritisation signal.
21 reports
Part of The SignDrop zero-day exploit
Pulse
Last change 1h ago · Next recheck 14 Nov 2026, 09:23 UK time
- Story13 Nov 2026, 09:23 UK time · 1h ago
Linked reporting from SecurityWeek (independent original reporter).
Read source (SecurityWeek)
1 entry so far. The timeline chart appears once this story has more history.
Sources
- SecurityWeekNews
Nightmare Eclipse Drops Windows Zero-Day Exploit ‘SignDrop’
How we know
Statements extracted from sources. Higher confidence means stronger corroboration.
- ClaimedHeadline60% confidence
Nightmare Eclipse Drops Windows Zero-Day Exploit ‘SignDrop’