Microsoft Internet Information Services (IIS) server 4.0 SP4, without certain hotfixes released for SP4, does not require authentication credentials under certain conditions, which allows remote attackers to bypass authentication requirements, as demonstrated by connecting via Microsoft Visual InterDev 6.0
Published Jul 5, 2007
7.5
HIGHCVSS 2.0
EPSS 11.27%
Description
Microsoft Internet Information Services (IIS) server 4.0 SP4, without certain hotfixes released for SP4, does not require authentication credentials under certain conditions, which allows remote attackers to bypass authentication requirements, as demonstrated by connecting via Microsoft Visual InterDev 6.0.
Affected products
No data.
- 4.0
- 6.0
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.
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
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 (24 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 11.27% (0.11270) | 95.86th | v5 (v2026.06.15) |
| Jun 15, 2026 | 11.27% (0.11270) | 95.40th | v5 (v2026.06.15) |
| Apr 2, 2026 | 12.55% (0.12549) | 93.92th | v4 (v2025.03.14) |
| Dec 14, 2025 | 9.52% (0.09515) | 92.55th | v4 (v2025.03.14) |
| Nov 18, 2025 | 12.39% (0.12389) | 93.22th | v4 (v2025.03.14) |
| Sep 19, 2025 | 15.94% (0.15941) | 94.53th | v4 (v2025.03.14) |
| Mar 30, 2025 | 13.49% (0.13492) | 93.60th | v4 (v2025.03.14) |
| Mar 29, 2025 | 19.20% (0.19198) | 92.40th | v4 (v2025.03.14) |
| Mar 19, 2025 | 13.49% (0.13492) | 93.37th | v4 (v2025.03.14) |
| Mar 17, 2025 | 11.28% (0.11278) | 92.99th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.78% (0.02779) | 90.97th | v3 (v2023.03.01) |
| Sep 17, 2024 | 2.61% (0.02611) | 90.51th | v3 (v2023.03.01) |
| Jul 22, 2024 | 16.20% (0.16197) | 96.05th | v3 (v2023.03.01) |
| May 24, 2024 | 14.53% (0.14527) | 95.75th | v3 (v2023.03.01) |
| May 10, 2024 | 12.56% (0.12564) | 95.42th | v3 (v2023.03.01) |
| Apr 25, 2024 | 10.89% (0.10886) | 95.03th | v3 (v2023.03.01) |
| Mar 15, 2024 | 9.55% (0.09555) | 94.60th | v3 (v2023.03.01) |
| Feb 8, 2024 | 8.83% (0.08832) | 94.34th | v3 (v2023.03.01) |
| Jan 15, 2024 | 1.24% (0.01243) | 84.00th | v3 (v2023.03.01) |
| Dec 7, 2023 | 1.15% (0.01145) | 83.09th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.96% (0.00962) | 80.92th | v3 (v2023.03.01) |
| Mar 6, 2023 | 11.68% (0.11676) | 95.15th | v2 (v2022.01.01) |
| Apr 1, 2022 | 11.68% (0.11676) | 94.76th | v2 (v2022.01.01) |
| Feb 4, 2022 | 11.68% (0.11676) | 88.93th | v2 (v2022.01.01) |
No CWE recorded.
References (3)
- http://archives.neohapsis.com/archives/ntbugtraq/1998-1999/msg00276.html mailing-listx_refsource_NTBUGTRAQ
- http://archives.neohapsis.com/archives/ntbugtraq/1998-1999/msg00277.html mailing-listx_refsource_NTBUGTRAQ
- http://www.securityfocus.com/bid/190 vdb-entryx_refsource_BID
| Link | Providers | Tags |
|---|---|---|
| http://archives.neohapsis.com/archives/ntbugtraq/1998-1999/msg00276.html | mailing-listx_refsource_NTBUGTRAQ | |
| http://archives.neohapsis.com/archives/ntbugtraq/1998-1999/msg00277.html | mailing-listx_refsource_NTBUGTRAQ | |
| http://www.securityfocus.com/bid/190 | vdb-entryx_refsource_BID |
Change history (0)
No recorded changes yet.