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CVE-2026-96958Suited to automated attack · CISA

.NET Denial of Service Vulnerability

CVSS score

7.5

EPSS probability

%1.0

Risk score

0.1

Published

5 d ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Official patch verified

Etkilenen ürün ve sürüm için yayımlanan güvenlik güncellemesini uygulayın.

Impact on My Inventory

Only the personal products you have added to your account are assessed; an organisation's inventory does not appear here.

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Vulnerability description

DayBreach CVE AI Research

CVE-2026-96958 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.

Inefficient algorithmic complexity in .NET allows an unauthorized attacker to deny service over a network.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-96958 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1microsoftMicrosoft .NET Framework 3.5 View
2microsoftMicrosoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 View
3microsoftMicrosoft .NET Framework 3.5 AND 4.7.2 View
4microsoftMicrosoft .NET Framework 3.5 AND 4.8 View
5microsoftMicrosoft .NET Framework 3.5 AND 4.8.1 View
6microsoftMicrosoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 View
7microsoftMicrosoft .NET Framework 4.8 View
8microsoftMicrosoft .NET Framework 4.8.1 View
9microsoftSystem.Security.Cryptography.Xml View
10microsoft.net View
11microsoft.net View
12microsoft.net View
13microsoft.net View
14applemacos View
15linuxlinux kernel View
16microsoftwindows View
17microsoft.net framework View
18microsoftwindows 11 26h1 View
19microsoft.net framework View
20microsoftwindows 10 1607 View
21microsoftwindows server 2012 View
22microsoftwindows server 2012 View
23microsoftwindows server 2016 View
24microsoft.net framework View
25microsoft.net framework View
26microsoft.net framework View
27microsoft.net framework View
28microsoft.net framework View
29microsoftwindows 10 21h2 View
30microsoftwindows 10 22h2 View
31microsoftwindows 11 23h2 View
32microsoftwindows 11 24h2 View
33microsoftwindows 11 25h2 View
34microsoftwindows 11 26h2 View
35microsoftwindows server 2022 View
36microsoftwindows server 2025 View
37microsoftwindows 10 1809 View
38microsoftwindows server 2019 View
39nugetSystem.Security.Cryptography.Xml View
40nugetSystem.Security.Cryptography.Xml View
41nugetSystem.Security.Cryptography.Xml View
42nugetSystem.Security.Cryptography.Xml View
43nugetSystem.Security.Cryptography.Xml View
44nugetSystem.Security.Cryptography.Xml View
45nugetSystem.Security.Cryptography.Xml View
46nugetSystem.Security.Cryptography.Xml View
Total affected vendors: 4|Products: 46

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
7.5CVSS 3.x—Vector not publishedGitHub Advisory
7.5CVSS V31HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HNVD
7.5CVSS V3_1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:CCVE CNA
0.0CVSS 4.0—Vector not publishedGitHub Advisory

Patch and Remediation Guide

Solution & Remediation Advisory

Patch verified

6 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

osvSystem.Security.Cryptography.Xml10.0.13

OSV düzeltilmiş sürüm: 10.0.13

osvSystem.Security.Cryptography.Xml11.0.0-rc.2

OSV düzeltilmiş sürüm: 11.0.0-rc.2

osvSystem.Security.Cryptography.Xml8.0.5

OSV düzeltilmiş sürüm: 8.0.5

osvSystem.Security.Cryptography.Xml9.0.21

OSV düzeltilmiş sürüm: 9.0.21

cvelist

.NET Denial of Service Vulnerability

Open source
reference

.NET Denial of Service Vulnerability

Open source
Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Apply the official update named in the evidence only to the matching product and version.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-96958 is associated with the following CWEs:

CWE-407: Common Weakness Enumeration Entry CWE-407

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-96958 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsGerekmiyor
UserGerekmiyor

Official Sources and Advisories

.NET Denial of Service Vulnerabilitypatchhttps://github.com/dotnet/runtime/security/advisories/GHSA-r955-8q5j-3h83vendor-advisoryhttps://github.com/dotnet/announcements/issues/488vendor-advisoryhttps://github.com/dotnet/runtime/issues/135709vendor-advisoryhttps://github.com/advisories/GHSA-r955-8q5j-3h83vendor-advisoryhttps://github.com/dotnet/runtimevendor-advisory

CVSS Vector Radar Chart

7.5 / 10
Attack VectorNetworkComplexityLowPrivilegesNoneUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityHigh

Vulnerability Scoring Details

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone required
User InteractionNone required
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)None
Availability (Erişilebilirlik)High

Yama doğrulandı

6 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

Follow the vendor

M
microsoft logo
microsoft
A
apple logo
apple
L
linux logo
linux
N
nuget logo
nuget

Weakness Type (CWE & CAPEC)

CWE-407

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