Page generated: 09 Nov 2026, 10:07 UTC
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CVE-2026-20963

Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.

CVSS 9.8 (CRITICAL) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.6/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 9.8: +1.47
  • Fresh EPSS: 29.20%: +0.15

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

Sources: 12 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

Cybersecurity Dive
Press · 15 Apr 2026, 07:00 · Medium-severity flaw in Microsoft SharePoint exploited - Cybersecurity Dive
Recorded Future
Press · 13 Apr 2026, 07:00 · March 2026 CVE Landscape: 31 High-Impact Vulnerabilities Identified, Interlock Ransomware Group Exploits Cisco FMC Zero-Day - Recorded Future
Help Net Security
Press · 22 Mar 2026, 07:00 · Week in review: ScreenConnect servers open to attack, exploited Microsoft SharePoint flaw - Help Net Security
CISO Series
Press · 20 Mar 2026, 07:00 · Cybersecurity News: Critical SharePoint flaw, real-time cyberattack prevention, CISA’s Intune warning - CISO Series
Help Net Security
Press · 19 Mar 2026, 07:00 · CISA warns of active exploitation of Microsoft SharePoint vulnerability (CVE-2026-20963) - Help Net Security
See all 12 source documents
SecurityWeek
Press · 19 Mar 2026, 07:00 · CISA Warns of Attacks Exploiting Recent SharePoint Vulnerability - SecurityWeek
The Hacker News
Press · 19 Mar 2026, 07:00 · CISA Warns of Zimbra, SharePoint Flaw Exploits; Cisco Zero-Day Hit in Ransomware Attacks - The Hacker News
BleepingComputer
Press · 19 Mar 2026, 07:00 · Critical Microsoft SharePoint flaw now exploited in attacks - BleepingComputer
CyberSecurityNews
Press · 19 Mar 2026, 07:00 · CISA Warns of Microsoft SharePoint Vulnerability Exploited in Attacks - CyberSecurityNews
TechRepublic
Press · 15 Jan 2026, 08:00 · Microsoft Patch Tuesday Fixes 112 Flaws, Includes SharePoint and Windows - TechRepublic
Rapid7
Press · 14 Jan 2026, 08:00 · Patch Tuesday - January 2026 - Rapid7
Qualys
Press · 13 Jan 2026, 08:00 · Microsoft and Adobe Patch Tuesday, January 2026 Security Update Review - Qualys

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 8.6 (2026-11-02 15:14). 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 9.8; EPSS 29.2%
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 14:00:01.230559+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
First press mention
13 Jan 2026, 08:00
Published
13 Jan 2026, 17:56
Added to the CISA KEV catalog
18 Mar 2026, 00:00
Latest press mention
15 Apr 2026, 07:00
Score calculated
05 Nov 2026, 14:00