What is CVE-2019-0980?

CVE-2019-0980 is a high-severity vulnerability in Microsoft .Net Framework 2.0, classified under CWE-19. CVSS score: 7.5/10. Published 2019-05-16.

How severe is CVE-2019-0980?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2019-0980 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Microsoft .Net Framework 2.0

CVE-2019-0980

A denial of service vulnerability exists when .NET Framework or .NET Core improperly handle web requests, aka '.Net Framework and .Net Core Denial of Service Vulnerability'. This CVE ID is unique from CVE-2019-0820, CVE-2019-0981.

Published 2019-05-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.049 (92.1th percentile), scored 2026-10-24.

Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 92.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.049 · newest: 0.049 · change: 0.000

Affected products

Microsoft .Net Framework 2.0 — versions Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2, Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2, Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2
Microsoft .Net Framework 3.0 — versions Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2, Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2, Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2
Microsoft .Net Framework 3.5 — versions Windows Server 2012, Windows Server 2012 (Server Core installation), Windows 8.1 for 32-bit systems
Microsoft .Net Framework 3.5.1 — versions Windows 7 for 32-bit Systems Service Pack 1, Windows 7 for x64-based Systems Service Pack 1, Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Microsoft .Net Framework 3.5 On Windows 10 Version 1903 For 32-Bit Systems — versions unspecified
Microsoft .Net Framework 3.5 On Windows 10 Version 1903 For X64-Based Systems — versions unspecified
Microsoft .Net Framework 3.5 On Windows Server, Version 1903 (Server Core Installation) — versions unspecified
Microsoft .Net Framework 4.5.2 — versions Windows 7 for 32-bit Systems Service Pack 1, Windows 7 for x64-based Systems Service Pack 1, Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Microsoft .Net Framework 4.6 — versions Windows Server 2008 for 32-bit Systems Service Pack 2, Windows Server 2008 for x64-based Systems Service Pack 2
Microsoft .Net Framework 4.6.2/4.7/4.7.1/4.7.2 — versions Windows Server 2016, Windows 10 Version 1607 for 32-bit Systems, Windows 10 Version 1607 for x64-based Systems

Weakness classification (CWE)

CWE-19

Public proof-of-concept exploits

Metalnem/sharpfuzz

References

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0980 (Patch, Vendor Advisory)
access.redhat.com/errata/RHSA-2019:1259 (vendor-advisory)

Frequently asked questions

What is CVE-2019-0980?: CVE-2019-0980 is a high-severity vulnerability in Microsoft .Net Framework 2.0, classified under CWE-19. CVSS score: 7.5/10. Published 2019-05-16.
How severe is CVE-2019-0980?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2019-0980 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.