CVE-2023-21722

mediumpriority · track · 0EPSS 0.009 · 60 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.92% (60th) EPSS

CVSS 5 · medium

Is it mine?

53 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · msrc_csaf

EPSS · scored 2026-10-27

.NET Framework Denial of Service Vulnerability

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedMicrosoft .NET Framework 2.0 Service Pack 2msrc_csaf
2.0.50727.8966:Monthly Rollup:https://support.microsoft.com/help/5022734
https://support.microsoft.com/help/5022734
FixedMicrosoft .NET Framework 3.0 Service Pack 2msrc_csaf
2.0.50727.8966:Monthly Rollup:https://support.microsoft.com/help/5022734
https://support.microsoft.com/help/5022734
FixedMicrosoft .NET Framework 3.5msrc_csaf
3.5.50727.8966:Monthly Rollup:https://support.microsoft.com/help/5022732
https://support.microsoft.com/help/5022732
FixedMicrosoft .NET Framework 3.5 AND 4.7.2msrc_csaf
10.0.04038.03:Security Update:https://support.microsoft.com/help/5022782
https://support.microsoft.com/help/5022782
FixedMicrosoft .NET Framework 3.5 AND 4.8msrc_csaf
10.0.04614.05:Security Update:https://support.microsoft.com/help/5022503
https://support.microsoft.com/help/5022503
FixedMicrosoft .NET Framework 3.5 AND 4.8.1msrc_csaf
10.0.09139.02:Security Update:https://support.microsoft.com/help/5022497
https://support.microsoft.com/help/5022497
FixedMicrosoft .NET Framework 3.5 and 4.6.2msrc_csaf
10.0.10240.19747:Security Update:https://support.microsoft.com/help/5022858
https://support.microsoft.com/help/5022858
FixedMicrosoft .NET Framework 3.5.1msrc_csaf
3.5.50727.8966:Monthly Rollup:https://support.microsoft.com/help/5022731
https://support.microsoft.com/help/5022731
FixedMicrosoft .NET Framework 4.6.2msrc_csaf
4.7.04038.06:Monthly Rollup:https://support.microsoft.com/help/5022734
https://support.microsoft.com/help/5022734
FixedMicrosoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2msrc_csaf
4.7.04614.08:Monthly Rollup:https://support.microsoft.com/help/5022731
https://support.microsoft.com/help/5022731
FixedMicrosoft .NET Framework 4.8msrc_csaf
4.8.4614.08:Monthly Rollup:https://support.microsoft.com/help/5022731
https://support.microsoft.com/help/5022731

cvss

Technical severity, 0–10. One row per scoring source.

5.0

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:Hsecondary · NVD / NIST USexploitability 1.3 · impact 3.6

v3.14.4mediumAV:L/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.15mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:Csecondary · ENISA EU

v3.15mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:Hsecondary · secure@microsoft.com USexploitability 1.3 · impact 3.6

v3.15mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:Csecondary · Microsoft Security Response Center US

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-404USCWE-59USCWE-59US

affected products (53)

Products and version ranges known to be affected.

Microsoft Microsoft .NET Framework 2.0 Service Pack 22.0.0 → 2.0.50727.8966enisa_euvdEU
Microsoft Microsoft .NET Framework 3.0 Service Pack 23.0.0 → 2.0.50727.8966enisa_euvdEU
Microsoft Microsoft .NET Framework 3.53.5.0 → 3.5.50727.8966enisa_euvdEU
Microsoft Microsoft .NET Framework 3.5 AND 4.7.24.7.0 → 10.0.04038.03enisa_euvdEU
Microsoft Microsoft .NET Framework 3.5 AND 4.84.8.0 → 10.0.04614.06enisa_euvdEU
Microsoft Microsoft .NET Framework 3.5 AND 4.8.14.8.1 → 10.0.09139.02enisa_euvdEU
Microsoft Microsoft .NET Framework 3.5 and 4.6.24.7.0 → 10.0.10240.19747enisa_euvdEU
Microsoft Microsoft .NET Framework 3.5.13.5.0 → 3.5.50727.8966enisa_euvdEU
Microsoft Microsoft .NET Framework 4.6.24.7.0 → 4.7.04038.06enisa_euvdEU
Microsoft Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.24.7.0 → 4.7.04614.08enisa_euvdEU
Microsoft Microsoft .NET Framework 4.84.8.0 → 4.8.4614.08enisa_euvdEU
Microsoft Corp Microsoft .NET Framework 2.0 Service Pack 2all versionsfstec_bduRU
Microsoft Corp Microsoft .NET Framework 3.0 Service Pack 2all versionsfstec_bduRU
Microsoft Corp Microsoft .NET Framework 3.5all versionsfstec_bduRU
Microsoft Corp Microsoft .NET Framework 3.5.1all versionsfstec_bduRU
Microsoft Corp Microsoft .NET Framework 4.6.2all versionsfstec_bduRU
Microsoft Corp Microsoft .NET Framework 4.7all versionsfstec_bduRU
Microsoft Corp Microsoft .NET Framework 4.7.1all versionsfstec_bduRU
Microsoft Corp Microsoft .NET Framework 4.7.2all versionsfstec_bduRU
Microsoft Corp Microsoft .NET Framework 4.8all versionsfstec_bduRU

showing 20 of 53

advisories (1)

Vendor and ecosystem advisories describing this.

msrc_CVE-2023-21722.NET Framework Denial of Service Vulnerability2023-02-14csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu msrc_csaf NVD CVE.org MITRE

published 2023-02-14modified 2026-08-19

references (5)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

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