CVE-2007-6750

CVE-2007-6750 is a medium-severity vulnerability in Apache Http Server with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 72% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-399.

Key facts

• Severity: Medium (CVSS 2.0 base score 5.0)
• EPSS exploit prediction: 72% (99th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-399
• Affected product: Apache Http Server
• Published: 2011-12-27
• Last modified: 2026-06-16

Description

The Apache HTTP Server 1.x and 2.x allows remote attackers to cause a denial of service (daemon outage) via partial HTTP requests, as demonstrated by Slowloris, related to the lack of the mod_reqtimeout module in versions before 2.2.15.

Frequently asked questions

What is CVE-2007-6750?

The Apache HTTP Server 1.x and 2.x allows remote attackers to cause a denial of service (daemon outage) via partial HTTP requests, as demonstrated by Slowloris, related to the lack of the mod_reqtimeout module in versions before 2.2.15.

How severe is CVE-2007-6750?

CVE-2007-6750 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2007-6750 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 72% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-6750?

CVE-2007-6750 primarily affects Apache Http Server. In total, 117 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-6750?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2007-6750 published?

CVE-2007-6750 was published on 2011-12-27 and last updated on 2026-06-16.

References

• http://archives.neohapsis.com/archives/bugtraq/2007-01/0229.html
• http://ha.ckers.org/slowloris/
• http://lists.opensuse.org/opensuse-security-announce/2012-02/msg00026.html
• http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00002.html
• http://marc.info/?l=bugtraq&m=136612293908376&w=2
• http://www.securityfocus.com/bid/21865
• http://www.securitytracker.com/id/1038144
• https://exchange.xforce.ibmcloud.com/vulnerabilities/72345
• https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05111017
• https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05158380
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19481

Affected products (117)

• cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.0:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.0.5:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.1:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.2:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.2.4:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.2.5:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.2.6:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.2.9:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.3:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.3.0:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.3.1:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.3.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.3.2:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.3.3:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.3.4:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.3.5:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.3.6:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.3.7:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.3.8:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.3.9:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.3.10:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.3.11:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.3.12:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.3.13:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.3.14:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.3.15:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.3.16:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.3.17:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.3.18:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.3.19:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.3.20:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.3.22:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.3.23:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.3.24:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.3.25:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:1.3.26:*:*:*:*:*:*:*

More vulnerabilities in Apache Http Server

• CVE-2010-0425 — Critical (CVSS 10.0): modules/arch/win32/mod_isapi.c in mod_isapi in the Apache HTTP Server 2.0.37 through 2.0.63, 2.2.0 through 2.2.14, and…
• CVE-2005-2700 — Critical (CVSS 10.0): ssl_engine_kernel.c in mod_ssl before 2.8.24, when using "SSLVerifyClient optional" in the global virtual host…
• CVE-2004-0492 — Critical (CVSS 10.0): Heap-based buffer overflow in proxy_util.c for mod_proxy in Apache 1.3.25 to 1.3.31 allows remote attackers to cause a…
• CVE-2003-0789 — Critical (CVSS 10.0): mod_cgid in Apache before 2.0.48, when using a threaded MPM, does not properly handle CGI redirect paths, which could…
• CVE-1999-1293 — Critical (CVSS 10.0): mod_proxy in Apache 1.2.5 and earlier allows remote attackers to cause a denial of service via malformed FTP commands,…
• CVE-1999-0926 — Critical (CVSS 10.0): Apache allows remote attackers to conduct a denial of service via a large number of MIME headers.

All CVEs affecting Apache Http Server →

Other CWE-399 (Resource Management Errors) vulnerabilities

• CVE-2015-8104 — Critical (CVSS 10.0): The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a…
• CVE-2015-0339 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
• CVE-2015-0335 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
• CVE-2015-0333 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
• CVE-2014-4121 — Critical (CVSS 10.0): Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 does not properly parse internationalized…
• CVE-2014-0560 — Critical (CVSS 10.0): Use-after-free vulnerability in Adobe Reader and Acrobat 10.x before 10.1.12 and 11.x before 11.0.09 on Windows and OS…

Browse all CWE-399 (Resource Management Errors) vulnerabilities →

Threat intelligence

Threat-intel indicators referencing this CVE:

• 222.99.52.202 (ipv4-addr)
• 218.4.156.254 (ipv4-addr)
• 121.164.135.251 (ipv4-addr)
• 90.160.135.217 (ipv4-addr)
• 41.224.62.206 (ipv4-addr)
• 62.36.19.42 (ipv4-addr)
• 62.36.19.41 (ipv4-addr)
• 171.100.156.38 (ipv4-addr)