VulnerabilityAnalyzed
CVE-2026-50649
Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.
HIGH 7.8EPSS 4.02%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.02%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 4.02% probability · 91th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-502
- Affected
- microsoft/.net framework · microsoft/.net · microsoft/visual studio 2026
- Source
- secure@microsoft.com
EPSS moved from 4.0% on 24 September 2026 to 4.0% on 27 October 2026.
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50649Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.