CVE-2026-56157Patch(microsoft / sharepoint_server)

LOWCVSS 5.4 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

Patch microsoft sharepoint_server systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Improper access control in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

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0.5/ 10 priority

Sources & remediation

Patch / fix

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56157

Weakness type (CWE)

CWE-284

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

sharepoint_server

Threat summary

Patch or workaround signal is available
1 mentions across 1 observed day

What's happening

Patch or workaround mentioned in 1 signal
Technical details provided in 1 signal
1 total mentions across 1 day

Affected systems

Vendors

microsoft

Products

sharepoint_server

2 versions affected across 1 product

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

Patch

1100.0%

Referenced assets1 URL

By indicator

https://windowsforum.com/threads/cve-2026-56157-patch-sharepoint-spoofing-flaw-by-july-14.438772/?utm_source=x&utm_medium=social&utm_campaign=news_node84

Full discourse1 post

Windows Forum@windowsforum92d
Patch
🪟 SharePoint admins, July 14 isn’t a calendar reminder—it’s patch day. CVE-2026-56157 enables authenticated spoofing, so patch every farm server… not just the one you remembered. https://windowsforum.com/threads/cve-2026-56157-patch-sharepoint-spoofing-flaw-by-july-14.438772/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #SecurityUpdates #PatchManagement #SharepointServer #Cve202656157 https://t.co/kxY63bflNU
Post summary
CVE-2026-56157 permits authenticated spoofing in SharePoint; admins are urged to patch all servers immediately.
0000039
1.2K followersView on X

CPE platform detail3 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

3 of 3 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	microsoft	sharepoint_server	-	-	-
App	microsoft	sharepoint_server	2016	-	-
App	microsoft	sharepoint_server	2019	-	-

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