HIGH
Format string vulnerability in the h_readrequest function in http.c in httpdx Web Server 1.4 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via format string specifiers in the Host header
Published Oct 11, 2009
10.0
HIGHCVSS 2.0
EPSS 14.63%
Description
Format string vulnerability in the h_readrequest function in http.c in httpdx Web Server 1.4 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via format string specifiers in the Host header.
Affected products
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.
10.0 HIGH NVD
AV:N/AC:L/Au:N/C:C/I:C/A:C
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
14.63% 0.14632
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.14632
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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 14.63% (0.14632) | 96.56th | v5 (v2026.06.15) |
| Jun 15, 2026 | 14.63% (0.14632) | 96.21th | v5 (v2026.06.15) |
| Mar 2, 2026 | 17.66% (0.17659) | 95.01th | v4 (v2025.03.14) |
| Mar 17, 2025 | 19.33% (0.19331) | 94.90th | v4 (v2025.03.14) |
| Dec 17, 2024 | 20.61% (0.20613) | 96.37th | v3 (v2023.03.01) |
| Oct 24, 2024 | 25.10% (0.25097) | 96.78th | v3 (v2023.03.01) |
| Mar 7, 2023 | 19.39% (0.19388) | 95.45th | v3 (v2023.03.01) |
| Mar 6, 2023 | 12.82% (0.12822) | 95.61th | v2 (v2022.01.01) |
| Apr 1, 2022 | 12.82% (0.12822) | 95.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 12.82% (0.12822) | 90.16th | v2 (v2022.01.01) |
Weaknesses (1)
References (6)
- http://httpdx.sourceforge.net/downloads/changelog.log x_refsource_CONFIRM
- http://osvdb.org/58129 vdb-entryx_refsource_OSVDB
- http://secunia.com/advisories/36734 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://www.exploit-db.com/exploits/9657 exploitx_refsource_EXPLOIT-DB
- http://www.vupen.com/english/advisories/2009/2654 vdb-entryx_refsource_VUPENPatchVendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/53205 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://httpdx.sourceforge.net/downloads/changelog.log | x_refsource_CONFIRM | |
| http://osvdb.org/58129 | vdb-entryx_refsource_OSVDB | |
| http://secunia.com/advisories/36734 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://www.exploit-db.com/exploits/9657 | exploitx_refsource_EXPLOIT-DB | |
| http://www.vupen.com/english/advisories/2009/2654 | vdb-entryx_refsource_VUPENPatchVendor Advisory | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/53205 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Oct 11, 2009
Updated Aug 7, 2024
Reserved Oct 11, 2009
Link CVE-2009-3663
CISA Vulnrichment
Updated n/a