Medium severity · published Aug 11, 2026
CVE-2026-62882
Microsoft Outlook Spoofing Vulnerability
4.3
CVSS
0.7%
EPSS
No
On KEV
Description
Insufficiently protected credentials in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 52% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OF
Office · Microsoft
All versions, or not specified · source: NVD
OU
Outlook · Microsoft
2016; 2016 · source: NVD
M3
Microsoft 365 Apps for Enterprise · Microsoft
16.0.1 before https://aka.ms/OfficeSecurityReleases · source: vendor
MO
Microsoft Office 2019 · Microsoft
19.0.0 before https://aka.ms/OfficeSecurityReleases · source: vendor
MO
Microsoft Office LTSC 2021 · Microsoft
16.0.1 before https://aka.ms/OfficeSecurityReleases · source: vendor
MO
Microsoft Office LTSC 2024 · Microsoft
16.0.0 before https://aka.ms/OfficeSecurityReleases · source: vendor
MO
Microsoft Outlook 2016 · Microsoft
16.0.0.0 before 16.0.5565.1000 · source: vendor
O2
Office 2019 · Microsoft
All versions, or not specified · source: NVD
O2
Office 2021 · Microsoft
All versions, or not specified · source: NVD
O2
Office 2024 · Microsoft
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-62882
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-62882
vendor-advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62882
More from Office
9.8
CVE-2024-21413
Microsoft Outlook Remote Code Execution Vulnerability
9.8
CVE-2023-23397
Microsoft Outlook Elevation of Privilege Vulnerability
8.8
CVE-2024-38189
Microsoft Project Remote Code Execution Vulnerability
8.8
CVE-2023-35311
Microsoft Outlook Security Feature Bypass Vulnerability
8.8
CVE-2019-1297
Microsoft Excel Remote Code Execution Vulnerability