CVE-2026-26127 — Out-of-bounds Read in Microsoft Microsoft.bcl.memory

CWE-125 — Out-of-bounds ReadCWE-129 — Improper Validation of Array IndexCWE-1395 — Dependency on Vulnerable Third-Party Component16 documents10 sources
Severity
7.5HIGHNVD
EPSS
0.1%
top 69.91%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
17
Microsoft Microsoft.bcl.memoryMicrosoft NET 10.0Microsoft NET 9.0+14 more
Timeline
PublishedMar 10
Latest updateApr 1

Description

Out-of-bounds read in .NET allows an unauthorized attacker to deny service over a network.

CVSS vector

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

Affected Packages17 packages

▶NVDmicrosoft/net10.0.0 — 10.0.4+1
▶CVEListV5microsoft/net_9.09.0.0 — 9.0.14
▶CVEListV5microsoft/net_10.010.0.0 — 10.0.4
▶NVDmicrosoft/bcl.memory9.0.0 — 9.0.14+1
▶CVEListV5microsoft/microsoft.bcl.memory10.0.0 — 10.0.4+1

🔴Vulnerability Details

10
GHSA
EnhancedLinq.Async is Vulnerable to Denial of Service via Transitive Dependency Microsoft.Bcl.Memory↗2026-04-01
▶
OSV
EnhancedLinq.Async is Vulnerable to Denial of Service via Transitive Dependency Microsoft.Bcl.Memory↗2026-04-01
▶
GHSA
idunno.Bluesky, idunno.AtProto and idunno.AtProto.OAuthCallback Denial of Service Vulnerability↗2026-03-13
▶
OSV
idunno.Bluesky, idunno.AtProto and idunno.AtProto.OAuthCallback Denial of Service Vulnerability↗2026-03-13
▶
OSV
dotnet8, dotnet9, dotnet10 vulnerabilities↗2026-03-11
▶

📋Vendor Advisories

3
Ubuntu
.NET vulnerabilities↗2026-03-11
▶
Red Hat
.net: .NET: Denial of Service via out-of-bounds read↗2026-03-10
▶
Microsoft
.NET Denial of Service Vulnerability↗2026-03-10
▶

🕵️Threat Intelligence

2
Tenable
March 2026 Microsoft Patch Tuesday | Tenable®↗2026-03-10
▶
Wiz
CVE-2026-26127 Impact, Exploitability, and Mitigation Steps | Wiz↗
▶
CVE-2026-26127 — Out-of-bounds Read in Microsoft | cvebase