CVE-2026-62871

HIGH
MEDIUM Priority: 0.04 BB Relevance: 41/100
Published: 2026-08-11 Modified: 2026-10-28 First seen: 2026-10-29 Status: active

Attack Surface

Low Complexity No Auth Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Local
AC: Low
PR: None
UI: Required
S: Unchanged
C: High
I: High
A: High

Description

Out-of-bounds write in .NET allows an unauthorized attacker to execute code locally.

Weakness Classification (2)

Affected Software (18)

VendorProductVersion
Microsoft .NET 8.0 runtime 8.0.0 < 8.0.30
Microsoft .NET 8.0 runtime 8.0.0 < 8.0.30
Microsoft .NET 9.0 runtime 9.0.0 < 9.0.19
Microsoft .NET 9.0 runtime 9.0.0 < 9.0.19
Microsoft Microsoft Visual Studio 2022 version 17.14 17.14.0 < 17.14.38
Microsoft Microsoft Visual Studio 2022 version 17.14 17.14.0 < 17.14.38
Microsoft Microsoft Visual Studio 2026 version 18.8 18.0 < 18.8.3
Microsoft Microsoft Visual Studio 2026 version 18.8 18.0 < 18.8.3
microsoft .net 8.0.0 – 8.0.30
microsoft .net 9.0.0 – 9.0.19
microsoft .net 10.0.0 – 10.0.11
microsoft .net 8.0.0 – 8.0.30
microsoft .net 9.0.0 – 9.0.19
microsoft .net 10.0.0 – 10.0.11
microsoft visual_studio_2022 17.14.0 – 17.14.38
microsoft visual_studio_2022 17.14.0 – 17.14.38
microsoft visual_studio_2026 18.8.0 – 18.8.3
microsoft visual_studio_2026 18.8.0 – 18.8.3

References & Advisories (1)

Bug Bounty Relevance

41 / 100
✓ No authentication
✓ Low complexity

CVSS Score

7.8 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

EPSS — Exploitation Probability

0.47%
Raw Score 0.004660
Percentile 40.4%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00466
2026-10-28
0.00466

Intelligence Sources

mitre ref →
nvd ref →