Skip to main content
No exploitation reportedFix available

CVE-2026-33116

No exploitation reported by the sources we read.

  • Published2026-04-14
  • WeaknessCWE-20 · CWE-400 · CWE-776

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Loop with unreachable exit condition ('infinite loop') in .NET, .NET Framework, Visual Studio allows an unauthorized attacker to deny service over a network.

Timeline

dates in UTC
  1. 2026-04-1418:17CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-33116?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-33116?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV
Microsoft .net frameworkversion to verify
BranchAffectedFixed in
3.5= 3.5no fix published
4.7= 4.7.2no fix published
4.6= 4.6.2no fix published
4.7= 4.7no fix published
4.7= 4.7.1no fix published
4.8= 4.8no fix published
4.8= 4.8.1no fix published
Microsoft .netversion to verify
BranchAffectedFixed in
10.0≥ 10.0.0, < 10.0.610.0.6
9.0≥ 9.0.0, < 9.0.159.0.15
8.0≥ 8.0.0, < 8.0.268.0.26
System.Security.Cryptography.Xml
BranchAffectedFixed in
8.0≥ 8.0.0, < 8.0.38.0.3

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • dotnetAlmaLinux:8all versions · fixed in 10.0.106-1.el8_10and 5 other packages
  • dotnet-hostAlmaLinux:8all versions · fixed in 10.0.6-1.el8_10and 8 other packages
  • dotnet-hostfxr-8.0AlmaLinux:10all versions · fixed in 8.0.26-1.el10_1and 7 other packages
  • dotnet-hostfxr-8.0AlmaLinux:9all versions · fixed in 8.0.26-1.el9_7and 7 other packages
  • dotnet-hostfxr-8.0AlmaLinux:8all versions · fixed in 8.0.26-1.el8_10and 7 other packages
  • dotnet-hostfxr-9.0AlmaLinux:10all versions · fixed in 9.0.15-1.el10_1and 7 other packages
  • dotnet-hostfxr-9.0AlmaLinux:8all versions · fixed in 9.0.15-1.el8_10and 7 other packages
  • dotnet-sdk-8.0AlmaLinux:10all versions · fixed in 8.0.126-1.el10_1and 3 other packages

4 more package ranges on OSV.dev

Vendor advisories

  • CVE-2026-33116 Red Hat Product Security1,469 products fixed

    dotnet: .NET: Denial of Service via Infinite Recursion in XmlDecryptionTransform

  • RHSA-2026:13693 Red Hat Product Security113 products fixed

    Red Hat Security Advisory: .NET 8.0 security update

  • RHSA-2026:13282 Red Hat Product Security119 products fixed

    Red Hat Security Advisory: .NET 9.0 security update

  • RHSA-2026:13283 Red Hat Product Security97 products fixed

    Red Hat Security Advisory: .NET 8.0 security update

  • RHSA-2026:13280 Red Hat Product Security111 products fixed

    Red Hat Security Advisory: .NET 9.0 security update

  • RHSA-2026:13281 Red Hat Product Security89 products fixed

    Red Hat Security Advisory: .NET 8.0 security update

12 more advisories

Full record on NVD

Fix

  1. Vendor fix Red Hat Product Security RHSA-2026:13693 · 113 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
  2. Vendor fix Red Hat Product Security RHSA-2026:9205 · 1 productFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/
  3. Workaround from the vendor Red Hat Product Security RHSA-2026:13693 · 113 productsMitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • NVDCVE recordread 2026-10-23
  • CISA-ADPSSVC decisionnone2026-04-14
  • OpenCVESSVC decisionnone—
  • CNACVSS 3.17.5read 2026-10-23
  • CNAweakness (CWE)CWE-20, CWE-400, CWE-776, CWE-835read 2026-10-23
  • FIRST EPSSEPSS score2.4 %2026-10-22
  • OSVaffected packages—
  • Microsoft MSRCadvisory—

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2026-04-14
Last Modified
2026-07-25
NVD status
Modified
MSRC Title
.NET, .NET Framework, and Visual Studio Denial of Service Vulnerability

Frequently asked questions

What is CVE-2026-33116?

Loop with unreachable exit condition ('infinite loop') in .NET, .NET Framework, Visual Studio allows an unauthorized attacker to deny service over a network.

Is CVE-2026-33116 actively exploited?

Active exploitation of CVE-2026-33116 has not been confirmed. Its EPSS score was 2.4% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-33116?

CVE-2026-33116 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Running dotnet? Hear about its next vulnerability

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

Get alerts for this productCISA KEV additions, October 2026Search CVEs

No credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database