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Page generated: 10 Nov 2026, 17:28 UTC

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CVE-2023-28252

Windows Common Log File System Driver Elevation of Privilege Vulnerability

CVSS 7.8 (HIGH) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE

0.0/10

REALITY · THREAT PRIORITY

8.4/10

General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?

Recorded exploitation baseline: +7.00
Technical severity: CVSS 7.8: +1.17
Fresh EPSS: 48.89%: +0.24

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 11 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

Securelist

Press · 21 Dec 2023, 08:00 · Windows CLFS and five exploits used by ransomware operators (Exploit #4 – CVE-2023-23376) - Securelist

Securelist

Press · 21 Dec 2023, 08:00 · Windows CLFS and five exploits used by ransomware operators (Exploit #5 – CVE-2023-28252) - Securelist

EclecticIQ Blog

Press · 25 Apr 2023, 07:00 · 3CX Incident Attributed to North Korea; New LockBit MacOS Sample - EclecticIQ Blog

Check Point Research

Press · 17 Apr 2023, 07:00 · 17th April – Threat Intelligence Report - Check Point Research

wiz.io

Press · 13 Apr 2023, 07:00 · Microsoft April 2023 Patch Tuesday Highlights: everything you need to know - wiz.io

See all 11 source documents

SOC Prime

Press · 12 Apr 2023, 07:00 · Detect CVE-2023-28252 & CVE-2023-21554 Exploitation Attempts: Windows Zero-Day Actively Used in Ransomware Attacks and a Critical RCE Flaw - SOC Prime

The Hacker News

Press · 12 Apr 2023, 07:00 · Urgent: Microsoft Issues Patches for 97 Flaws, Including Active Ransomware Exploit - The Hacker News

Rapid7

Press · 11 Apr 2023, 07:00 · Patch Tuesday - April 2023 - Rapid7

Securelist

Press · 11 Apr 2023, 07:00 · Nokoyawa ransomware attacks with Windows zero-day - Securelist

Kaspersky

Press · 11 Apr 2023, 07:00 · CVE-2023-28252 zero-day vulnerability in CLFS - Kaspersky

Kaspersky

Press · 11 Apr 2023, 07:00 · Zero-day in Microsoft Windows used in Nokoyawa ransomware attacks - Kaspersky

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 8.4 (2026-11-02 15:13). The curve appears once the score changes.

Public exploit evidence

Public exploit entries / repo candidates

See 1 repos with metrics

Repository	Stars	Forks	Language	Updated
bkstephen/Compiled-PoC-Binary-For-CVE-2023-28252	5	1	—	01 Jan 2024, 15:39

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 48.9%
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 13:58:52.927189+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline

Added to the CISA KEV catalog

11 Apr 2023, 00:00

First press mention

11 Apr 2023, 07:00

Published

11 Apr 2023, 19:13

Latest press mention

21 Dec 2023, 08:00

Score calculated

05 Nov 2026, 13:58

PoCs on GitHub

1 repositories