365 Apps CVE-2026-21261
MEDIUMCVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Lifecycle Timeline
2DescriptionNVD
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
AnalysisAI
Information disclosure in Microsoft Office Excel and related products results from an out-of-bounds read vulnerability that requires local access and user interaction to exploit. An attacker can leverage this flaw to read sensitive data from memory on an affected system. …
Sign in for full analysis, threat intelligence, and remediation guidance.
RemediationAI
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.
Sign in for detailed remediation steps.
More from same product – last 7 days
{filename} endpoint. The flawed traversal filter only rejects forward slashes and '..' sequences, leaving absolute Windo
Remote code execution in Microsoft Azure Orbital Spatio allows unauthenticated network attackers to upload dangerous fil
Unsafe deserialization in Microsoft Planetary Computer Pro (Geocatalog) lets a remote unauthenticated attacker craft mal
Remote code execution in Microsoft Power Pages allows unauthenticated network attackers to inject and execute operating-
Privilege elevation in Microsoft Azure Resource Manager (ARM) allows remote unauthenticated attackers to bypass authenti
Share
External POC / Exploit Code
Leaving vuln.today