CVE-2026-97801
.NET Framework Tampering Vulnerability
Improper validation of specified type of input in .NET Framework allows an unauthorized attacker to perform tampering over a network.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
.NET Framework Tampering Vulnerability
Improper validation of specified type of input in .NET Framework allows an unauthorized attacker to perform tampering over a network.
- Record
CVE-2026-97801- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C - Weakness
- CWE-1287
- Updated
- 2026-11-02
EUVDEUVD-2026-100458
Improper validation of specified type of input in .NET Framework allows an unauthorized attacker to perform tampering over a network.
- Record
EUVD-2026-100458- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-pjfw-qhmc-7gc7
Improper validation of specified type of input in .NET Framework allows an unauthorized attacker...
Improper validation of specified type of input in .NET Framework allows an unauthorized attacker to perform tampering over a network.
- Record
GHSA-pjfw-qhmc-7gc7- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-1287
- Updated
- 2026-11-02
NVD
Improper validation of specified type of input in .NET Framework allows an unauthorized attacker to perform tampering over a network.
- Record
CVE-2026-97801- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-1287
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-97801 is a high vulnerability (CVSS 7.5) in Microsoft .net Framework 3.5, published October 13, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.73%, the 54th percentile. No source names a fixed version.