PT-2026-2760 · Microsoft · Sharepoint Server

Published 2026-01-13 · Updated 2026-03-19 · CVE-2026-20963

Positive Technologies · (AI Summary)

CVSS v2.0

9.0

High

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Microsoft Office SharePoint (affected versions not specified)

Description The software contains a flaw related to the deserialization of untrusted data. This allows an authorized attacker to execute code over a network.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Deserialization of Untrusted Data

Weakness Enumeration

CWE-502

Related Identifiers

BDU:2026-00638

CVE-2026-20963

Affected Products

Sharepoint Server

References · 38

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20963 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-20963 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-20963 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-20963 · Security Note
• https://bdu.fstec.ru/vul/2026-00638 · Security Note
• https://twitter.com/shah_sheikh/status/2034567198749172068 · Twitter Post
• https://twitter.com/shah_sheikh/status/2034591303498158094 · Twitter Post
• https://twitter.com/404LABSx/status/2034572011175907475 · Twitter Post
• https://twitter.com/TheCyberSecHub/status/2034611677040353465 · Twitter Post
• https://twitter.com/CveFindCom/status/2011145951428104261 · Twitter Post
• https://twitter.com/DefusedCyber/status/2034561341814378935 · Twitter Post
• https://twitter.com/vuln_tracker/status/2034580271551414473 · Twitter Post
• https://twitter.com/TheHackerWire/status/2011146168294916254 · Twitter Post
• https://twitter.com/secharvesterx/status/2034600959746211898 · Twitter Post
• https://twitter.com/TweetThreatNews/status/2034615902835016075 · Twitter Post