CVE-2026-65663Patch(microsoft / sharepoint_server)

LOWCVSS 8.8 · HIGH

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

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

microsoft CVEs Back to dashboard

0.5/ 10 priority

Sources & remediation

Patch / fix

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65663

Weakness type (CWE)

CWE-502

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

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
2 mentions across 2 observed days
Momentum state: stable

What's happening

Patch or workaround mentioned in 1 signal
Technical details provided in 1 signal
Disclosure: 1 classified signal
Peaked 1d ago at 1 mentions (2026-08-12); latest day: 1
2 total mentions across 2 days

Affected systems

Vendors

microsoft

Products

sharepoint_server

2 versions affected across 1 product

Deep dive

Activity timeline2 mentions / 2d

Signal classification2 categories

Patch

150.0%

Disclosure

150.0%

Referenced assets2 URLs

By indicator

Classification over time

Date	Total	Labels

2026-08-12	1	Patch1
2026-08-13	1	Disclosure1

Full discourse2 posts

splitline 👁️🐈‍⬛@_splitline_45d
Disclosure
so i actually got more than one RCE chain (~2.5?) for SharePoint at Pwn2Own this year, even though i ended up using the freakishly simple one (for strategic reasons :p) here's another one of them: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65663
Post summary
The user reports discovering an RCE chain for SharePoint (CVE‑2026‑65663) at Pwn2Own, providing no PoC or exploitation details, only linking to the Microsoft update.
15065205.3K
2.5K followersView on X
Windows Forum@windowsforum46d
Patch
🔧 Another SharePoint RCE joins the patch queue—but CVE publication isn’t proof of active exploitation or an internet-facing disaster. Verify those August patches before panic becomes your incident plan. https://windowsforum.com/security-alerts.84/cve-2026-65663-verify-august-sharepoint-server-patches.442681/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #RemoteCodeExecution #SharepointServer #PatchTuesday https://t.co/hRpmNWx9oj
Post summary
The post is a cautionary reminder to verify SharePoint Server patches for CVE‑2026‑65663, with no evidence of active exploitation or detailed vulnerability info.
0000045
1.3K 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	-	-

Explore more

Back to dashboard microsoft CVEs sharepoint_server vulnerabilities