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Vulnerability record · CVE-2007-0086 · published 5 January 2007

CVE-2007-0086: Apache http server uncontrolled resource consumption vulnerability

Apache · Http Server

The Apache HTTP Server, when accessed through a TCP connection with a large window size, allows remote attackers to cause a denial of service (network bandwidth consumption) via a Range header that specifies multiple copies of the same fragment. NOTE: the severity of this issue has been disputed by third parties, who state that the large window size required by the attack is not normally supported or configured by the server, or that a DDoS-style attack would accomplish the same goal

7.8 CVSS 2.0 High EPSS 10% · top 4.5% CWE-400 · Uncontrolled resource consumption
7.8CVSS 2.0 base score
10%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References
16 Jun 2026Last modified by NVD

Description

The Apache HTTP Server, when accessed through a TCP connection with a large window size, allows remote attackers to cause a denial of service (network bandwidth consumption) via a Range header that specifies multiple copies of the same fragment. NOTE: the severity of this issue has been disputed by third parties, who state that the large window size required by the attack is not normally supported or configured by the server, or that a DDoS-style attack would accomplish the same goal

AV:N/AC:L/Au:N/C:N/I:N/A:C

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://osvdb.org/33456 Broken Link
http://www.securityfocus.com/archive/1/455833/100/0/threaded Third Party AdvisoryVDB Entry
http://www.securityfocus.com/archive/1/455879/100/0/threaded Third Party AdvisoryVDB Entry
http://www.securityfocus.com/archive/1/455882/100/0/threaded Third Party AdvisoryVDB Entry
http://www.securityfocus.com/archive/1/455920/100/0/threaded Third Party AdvisoryVDB Entry
http://osvdb.org/33456 Broken Link
http://www.securityfocus.com/archive/1/455833/100/0/threaded Third Party AdvisoryVDB Entry
http://www.securityfocus.com/archive/1/455879/100/0/threaded Third Party AdvisoryVDB Entry
http://www.securityfocus.com/archive/1/455882/100/0/threaded Third Party AdvisoryVDB Entry
http://www.securityfocus.com/archive/1/455920/100/0/threaded Third Party AdvisoryVDB Entry

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2007-0086), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.