MEDIUM
Denial of service in IIS 4.0 via a flood of HTTP requests with malformed headers
Published Jan 4, 2000
5.0
MEDIUMCVSS 2.0
EPSS 21.52%
Description
Denial of service in IIS 4.0 via a flood of HTTP requests with malformed headers.
Affected products
No data.
OR
- 2.0
- 2.5
- 4.0
- 3.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
21.52% 0.21525
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
EPSS probability 0.21525
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 21.52% (0.21525) | 97.55th | v5 (v2026.06.15) |
| Jun 15, 2026 | 22.08% (0.22079) | 97.36th | v5 (v2026.06.15) |
| Oct 24, 2025 | 19.42% (0.19417) | 95.11th | v4 (v2025.03.14) |
| Jul 22, 2025 | 17.01% (0.17010) | 94.67th | v4 (v2025.03.14) |
| Jun 18, 2025 | 21.49% (0.21491) | 95.39th | v4 (v2025.03.14) |
| May 28, 2025 | 17.01% (0.17010) | 94.60th | v4 (v2025.03.14) |
| Mar 19, 2025 | 21.49% (0.21491) | 95.00th | v4 (v2025.03.14) |
| Mar 17, 2025 | 20.44% (0.20439) | 95.08th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.50% (0.00498) | 77.06th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.50% (0.00498) | 75.58th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.75% (0.00746) | 77.99th | v3 (v2023.03.01) |
| Mar 6, 2023 | 21.12% (0.21123) | 96.55th | v2 (v2022.01.01) |
| Apr 1, 2022 | 21.12% (0.21123) | 96.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 21.12% (0.21123) | 94.13th | v2 (v2022.01.01) |
Weaknesses (1)
References (4)
- http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ238349 vendor-advisoryx_refsource_MSKB
- http://www.ciac.org/ciac/bulletins/j-058.shtml third-party-advisorygovernment-resourcex_refsource_CIAC
- http://www.securityfocus.com/bid/579 vdb-entryx_refsource_BID
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/1999/ms99-029 vendor-advisoryx_refsource_MS
| Link | Providers | Tags |
|---|---|---|
| http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ238349 | vendor-advisoryx_refsource_MSKB | |
| http://www.ciac.org/ciac/bulletins/j-058.shtml | third-party-advisorygovernment-resourcex_refsource_CIAC | |
| http://www.securityfocus.com/bid/579 | vdb-entryx_refsource_BID | |
| https://docs.microsoft.com/en-us/security-updates/securitybulletins/1999/ms99-029 | vendor-advisoryx_refsource_MS |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jan 4, 2000
Updated Aug 1, 2024
Reserved Dec 8, 1999
Link CVE-1999-0867
CISA Vulnrichment
Updated n/a