Page generated: 08 Nov 2026, 10:27 UTC
CVE-2024-21413
Microsoft Outlook Remote Code Execution Vulnerability
CVSS 9.8 (CRITICAL) KEV: KNOWN CATALOG
Attention and evidence
HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.9/10
General review priority; not probability
Evidence confidence: Exploitation recorded
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
CyberSecurityNews
Press · 01 Dec 2025, 08:00 · PoC Exploit Released for Critical Outlook 0-Click Remote Code Execution Vulnerability - CyberSecurityNews
GreyNoise
Press · 26 Feb 2025, 08:00 · GreyNoise Detects Active Exploitation of CVEs Mentioned in Black Basta’s Leaked Chat Logs - GreyNoise
Armis, The Cyber Exposure Management & Security Company
Press · 20 Feb 2025, 08:00 · Microsoft Outlook Remote Code Execution Vulnerability (CVE-2024-21413) - Armis, The Cyber Exposure Management & Security Company
The Hacker News
Press · 10 Feb 2025, 08:00 · XE Hacker Group Exploits VeraCore Zero-Day to Deploy Persistent Web Shells - The Hacker News
BleepingComputer
Press · 06 Feb 2025, 08:00 · Critical RCE bug in Microsoft Outlook now exploited in attacks - BleepingComputer
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 8.9 (2026-11-02 15:13). The curve appears once the score changes.
Public exploit evidence
8
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 9.8; EPSS 94.7%
- Attention, last 30 days
- 0 distinct story titles; 0 press documents; 0 publisher domains.
- Technical potential
- network access, no prior 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 13:59:08.088796+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z
Source event timeline
First press mention
13 Feb 2024, 08:00
Published
13 Feb 2024, 18:02
Added to the CISA KEV catalog
06 Feb 2025, 00:00
Latest press mention
01 Dec 2025, 08:00
Score calculated
05 Nov 2026, 13:59
PoCs on GitHub
8 repositories