CVE-2026-97801

HIGH CVSS 3.1: 7.5 EPSS 0.73%
Updated Oct 25, 2026
Microsoft
Parameter Value
CVSS 7.5 (HIGH)
Affected Versions 3.0.0.0 — 4.8.9363.0
Fixed In 2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0
Type CWE-1287
Vendor Microsoft
Public PoC No

Improper validation of specified type of input in .NET Framework allows an unauthorized attacker to perform tampering over a network.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
High
Complete data modification
Availability
None
No disruption

CVSS Vector v3.1

Weakness Type (CWE)

Vulnerable Products 8

Configuration From (including) Up to (excluding)
Microsoft .Net
cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
4.8.1 2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0
Microsoft .Net_Framework
cpe:2.3:a:microsoft:.net_framework:*:*:*:*:*:*:*:*
4.8.0.0 4.8.9363.0
Microsoft .Net
cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
3.5.0 2.0.50727.9188 AND 3.0.30729.9171
Microsoft .Net_Framework
cpe:2.3:a:microsoft:.net_framework:*:*:*:*:*:*:*:*
3.0.0.0 2.0.50727.8987 AND 3.0.30729.8982 AND 4.7.4150.0
Microsoft .Net
cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
4.7.0 2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0
Microsoft .Net
cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
4.8.0 2.0.50727.9073 AND 3.0.30729.9070 AND 4.8.4811.0
Microsoft .Net
cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
4.7.0 4.7.4150.0
Microsoft .Net
cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
4.8.0 4.8.4811.0