Page generated: 11 Nov 2026, 08:20 UTC
CVE-2025-21418
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
CVSS 7.8 (HIGH) KEV: KNOWN CATALOG
Attention and evidence
HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.2/10
General review priority; not probability
Evidence confidence: Exploitation recorded
Sources: 10 documents and public datasets.
Hype components
Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100
Sources and documents
The Hacker News
Press · 14 May 2025, 07:00 · Microsoft Fixes 78 Flaws, 5 Zero-Days Exploited; CVSS 10 Bug Impacts Azure DevOps Server - The Hacker News
CyberSecurityNews
Press · 20 Feb 2025, 08:00 · Windows Disk Cleanup Tool Vulnerability Exploited to Gain SYSTEM Privileges - CyberSecurityNews
thezdi.com
Press · 11 Feb 2025, 08:00 · The February 2025 Security Update Review - thezdi.com
Krebs on Security
Press · 11 Feb 2025, 08:00 · Microsoft Patch Tuesday, February 2025 Edition - Krebs on Security
SecurityWeek
Press · 11 Feb 2025, 08:00 · Microsoft Patches ‘Wormable’ Windows Flaw and File-Deleting Zero-Day - SecurityWeek
Score evolution
● Hype ● Reality
Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.
First record: hype 0.0 · reality 8.2 (2026-11-02 15:13). The curve appears once the score changes.
Public exploit evidence
0
Public exploit entries / repo candidates
Evidence context and dated references
Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.
Evidence in context
- Confidence in exploitation evidence
- Exploitation recorded
- Priority basis
- Recorded exploitation; CVSS 7.8; EPSS 2.1%
- Attention, last 30 days
- 0 distinct story titles; 0 press documents; 0 publisher domains.
- Technical potential
- local access, low privileges, no user interaction.
- Observed activity
- Exploitation recorded in CISA KEV.
- Known scale
- Not quantified.
- Evidence confidence basis
- Trusted exploitation confirmation
Score evaluated: 2026-11-05 13:59:29.589072+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z
Source event timeline
Added to the CISA KEV catalog
11 Feb 2025, 00:00
First press mention
11 Feb 2025, 08:00
Published
11 Feb 2025, 17:58
Latest press mention
14 May 2025, 07:00
Score calculated
05 Nov 2026, 13:59