CVE & CISA-KEV Catalog

CVE-2026-20948

HIGH
7.8
CVSS v3
NVD

Description

Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally.

How to fix

Remediation Available
Microsoft SharePoint Enterprise Server 2016Microsoft
Install:KB5002827Microsoft
Install:KB5002828Microsoft
Microsoft SharePoint Server 2019Microsoft
Install:KB5002823Microsoft
Install:KB5002825Microsoft
Microsoft Word 2016Microsoft
Install:KB5002829Microsoft

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Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Exploit Intelligence

0.52%probability of exploitation in 30 days
42ndpercentile

Moderate risk: more likely to be exploited than 42% of all known CVEs.

References

Vendor Advisory1

Related Vulnerabilities

Other CWE-822 (Untrusted Pointer Dereference) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2023-21768High7.865%-Fix
CVE-2024-21338High7.860%KEV + RansomFix
CVE-2024-35250High7.825%KEVFix
CVE-2023-29360High8.422%KEVFix
CVE-2023-36033High7.812%KEVFix
CVE-2025-50165Critical9.89.5%-Fix

Common questions

How do I fix CVE-2026-20948?

Published advisories record a fix for 3 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2026-20948 being actively exploited?

Not that we know of. CVE-2026-20948 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.52% is the estimated probability that it will be exploited in the next 30 days. That is higher than 42% of all scored CVEs.

How severe is CVE-2026-20948?

CVE-2026-20948 has a CVSS v3 base score of 7.8, rated important. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-20948 affect?

Published advisories record a fix for Microsoft SharePoint Enterprise Server 2016 (Microsoft), Microsoft SharePoint Server 2019 (Microsoft), Microsoft Word 2016 (Microsoft). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-01-16.