CVE-2025-59248

CWE-20 — Improper Input Validation4 documents4 sources
Severity
7.5HIGH
EPSS
0.1%
top 67.78%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
Microsoft Microsoft Exchange Server 2016 Cumulative Update 23Microsoft Microsoft Exchange Server 2019 Cumulative Update 14Microsoft Microsoft Exchange Server 2019 Cumulative Update 15+2 more
Timeline
PublishedOct 14

Description

Improper input validation in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NExploitability: 3.9 | Impact: 3.6

Affected Packages5 packages

▶NVDmicrosoft/exchange_server< 15.02.2562.029+2
▶CVEListV5microsoft/microsoft_exchange_server_subscription_edition_rtm15.02.0.0 — 15.02.2562.029

🔴Vulnerability Details

2
CVEList
Microsoft Exchange Server Spoofing Vulnerability↗2025-10-14
▶
GHSA
GHSA-4fp2-p8gm-qx95: Improper input validation in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network↗2025-10-14
▶

📋Vendor Advisories

1
Microsoft
Microsoft Exchange Server Spoofing Vulnerability↗2025-10-14
▶