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Page generated: 11 Nov 2026, 05:16 UTC

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CVE-2023-21715

Microsoft Publisher Security Feature Bypass Vulnerability

CVSS 7.3 (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

Why this priority?

Recorded exploitation baseline: +7.00
Technical severity: CVSS 7.3: +1.09
Fresh EPSS: 12.01%: +0.06

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

Sources: 8 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

Check Point Research

Press · 04 Dec 2023, 08:00 · The Obvious, the Normal, and the Advanced: A Comprehensive Analysis of Outlook Attack Vectors - Check Point Research

Microsoft

Press · 12 Sep 2023, 07:00 · Malware distributor Storm-0324 facilitates ransomware access - Microsoft

BleepingComputer

Press · 16 Feb 2023, 08:00 · CISA warns of Windows and iOS bugs exploited as zero-days - BleepingComputer

Cisco Talos Blog

Press · 16 Feb 2023, 08:00 · Threat Source newsletter (Feb. 16, 2023) — Recapping what we may have missed so far this year - Cisco Talos Blog

CrowdStrike

Press · 15 Feb 2023, 08:00 · February 2023 Patch Tuesday: Updates and Analysis - CrowdStrike

See all 8 source documents

TechSpot

Press · 15 Feb 2023, 08:00 · Microsoft's Patch Tuesday for February fixes 3 zero-day bugs and more - TechSpot

TechTarget

Press · 15 Feb 2023, 08:00 · Microsoft remedies three zero-days on February Patch Tuesday - TechTarget

Sophos

Press · 14 Feb 2023, 08:00 · A diverse set of fixes in February’s Patch Tuesday release - Sophos

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

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 7.3; EPSS 12.0%
Attention, last 30 days: 0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential: local access, low 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 13:58:49.717973+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline

Added to the CISA KEV catalog

14 Feb 2023, 00:00

First press mention

14 Feb 2023, 08:00

Published

14 Feb 2023, 19:33

Latest press mention

04 Dec 2023, 08:00

Score calculated

05 Nov 2026, 13:58