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Page generated: 11 Nov 2026, 13:37 UTC

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CVE-2023-36584

Windows Mark of the Web Security Feature Bypass Vulnerability

CVSS 5.4 (MEDIUM) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE

0.0/10

REALITY · THREAT PRIORITY

7.8/10

General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?

Recorded exploitation baseline: +7.00
Technical severity: CVSS 5.4: +0.81
Fresh EPSS: 3.25%: +0.02

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

Sources: 6 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

TechTarget

Press · 04 Jan 2024, 08:00 · 10 of the biggest zero-day attacks of 2023 - TechTarget

SecurityWeek

Press · 17 Nov 2023, 08:00 · CISA Warns of Attacks Exploiting Sophos Web Appliance Vulnerability - SecurityWeek

BleepingComputer

Press · 17 Nov 2023, 08:00 · CISA warns of actively exploited Windows, Sophos, and Oracle bugs - BleepingComputer

Unit 42

Press · 13 Nov 2023, 08:00 · In-Depth Analysis of July 2023 Exploit Chain Featuring CVE-2023-36884 and CVE-2023-36584 - Unit 42

BleepingComputer

Press · 10 Oct 2023, 07:00 · Microsoft October 2023 Patch Tuesday fixes 3 zero-days, 104 flaws - BleepingComputer

See all 6 source documents

Unit 42

Press · 12 Jul 2023, 07:00 · CVE-2023-36884 - Microsoft Office and Windows HTML Remote Code Execution: Threat Brief (Updated) - Unit 42

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 7.8 (2026-11-02 15:13). The curve appears once the score changes.

Public exploit evidence

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 5.4; EPSS 3.3%
Attention, last 30 days: 0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential: network access, no prior privileges, user interaction.
Observed activity: Exploitation recorded in CISA KEV.
Known scale: Not quantified.
Evidence confidence basis: Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:58:56.083638+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline

First press mention

12 Jul 2023, 07:00

Published

10 Oct 2023, 17:07

Added to the CISA KEV catalog

16 Nov 2023, 00:00

Latest press mention

04 Jan 2024, 08:00

Score calculated

05 Nov 2026, 13:58