Linked CVE review

Deploy Microsoft Microsoft Office security update KB5002828

Linked CVEs: 7
Confirmed exploited: 1
PoC or lab evidence: 0
Maximum CVSS: 9.8

Evidence is kept separate

Confirmed exploitation, public exploit material, EPSS probability and CVSS severity answer different questions. “No confirmation recorded” means the checked sources do not currently confirm exploitation. It is not proof that exploitation has not occurred.

7 of 7 linked CVEs shown

Confirmed exploitedCVSS above 9.0

CVE and description	Severity	Exploit reality	Forecast and access	Remediation
CVE-2026-20963 Immediate evidence Microsoft SharePoint Deserialization of Untrusted Data Vulnerability Microsoft SharePoint contains a deserialization of untrusted data vulnerability that allows an unauthorized attacker to execute code over a network.	9.8 · CVSS 3.1 · CriticalSource: CNA	Confirmed in the wildCISA added this CVE to its Known Exploited Vulnerabilities catalogue on 2026-03-18.None recordedNo exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.	EPSS: 29.6% · 98.2th percentileForecast date: 2026-10-08NETWORK · LOW complexity · NONE privileges · NONE user interaction	Patch nowCISA confirms exploitation in the wild and lists 2026-03-21 as the remediation due date.Patch available. The Cyber Centre recommends that organizations upgrade affected Microsoft SharePoint instances to a fixed version: Affected product Affected versions Fixed versions Microsoft SharePoint Enterprise Server 2016 16.0.0 before 16.0.5535.1001 16.0.5535.1001 Microsoft SharePoint Server 2019 16.0.0 before 16.0.10417.20083 16.0.10417.20083 Microsoft SharePoint Serve
CVE-2026-20947 Elevated EPSS forecast Microsoft SharePoint Server Remote Code Execution Vulnerability Improper neutralization of special elements used in an sql command ('sql injection') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.	8.8 · CVSS 3.1 · HighSource: CNA	No confirmation recordedNo CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.None recordedNo exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.	EPSS: 18.8% · 97.2th percentileForecast date: 2026-10-08NETWORK · LOW complexity · LOW privileges · NONE user interaction	Within 7 daysHigh technical severity; prioritise exposed affected systems while verifying vendor guidance.Awaiting fix. No fixed version is explicitly recorded in the structured CVE data.
CVE-2026-20951 Scheduled assessment Microsoft SharePoint Server Remote Code Execution Vulnerability Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to execute code locally.	7.8 · CVSS 3.1 · HighSource: CNA	No confirmation recordedNo CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.None recordedNo exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.	EPSS: 0.81% · 55.7th percentileForecast date: 2026-10-08LOCAL · LOW complexity · NONE privileges · REQUIRED user interaction	Within 7 daysHigh technical severity; prioritise exposed affected systems while verifying vendor guidance.Awaiting fix. No fixed version is explicitly recorded in the structured CVE data.
CVE-2026-20943 Scheduled assessment Microsoft Office Click-To-Run Remote Code Execution Vulnerability Untrusted search path in Microsoft Office allows an unauthorized attacker to execute code locally.	7.0 · CVSS 3.1 · HighSource: CNA	No confirmation recordedNo CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.None recordedNo exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.	EPSS: 0.66% · 50.1th percentileForecast date: 2026-10-08LOCAL · HIGH complexity · NONE privileges · REQUIRED user interaction	Within 7 daysHigh technical severity; prioritise exposed affected systems while verifying vendor guidance.Awaiting fix. No fixed version is explicitly recorded in the structured CVE data.
CVE-2026-20948 Scheduled assessment Microsoft Word Remote Code Execution Vulnerability Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally.	7.8 · CVSS 3.1 · HighSource: CNA	No confirmation recordedNo CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.None recordedNo exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.	EPSS: 0.61% · 47.4th percentileForecast date: 2026-10-08LOCAL · LOW complexity · NONE privileges · REQUIRED user interaction	Within 7 daysHigh technical severity; prioritise exposed affected systems while verifying vendor guidance.Awaiting fix. No fixed version is explicitly recorded in the structured CVE data.
CVE-2026-20959 Scheduled assessment Microsoft SharePoint Server Spoofing Vulnerability Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.	4.6 · CVSS 3.1 · MediumSource: CNA	No confirmation recordedNo CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.None recordedNo exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.	EPSS: 7.57% · 94.4th percentileForecast date: 2026-10-08NETWORK · LOW complexity · LOW privileges · REQUIRED user interaction	ScheduledMedium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.Awaiting fix. No fixed version is explicitly recorded in the structured CVE data.
CVE-2026-20958 Scheduled assessment Microsoft SharePoint Information Disclosure Vulnerability Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to disclose information over a network.	5.4 · CVSS 3.1 · MediumSource: CNA	No confirmation recordedNo CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.None recordedNo exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.	EPSS: 0.34% · 25.7th percentileForecast date: 2026-10-08NETWORK · LOW complexity · LOW privileges · NONE user interaction	ScheduledMedium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.Awaiting fix. No fixed version is explicitly recorded in the structured CVE data.