CVE-2007-0087
CVE-2007-0087 is a high-severity vulnerability in Microsoft Internet Information Server with a CVSS 2.0 base score of 7.8. Its EPSS exploit-prediction score of 23% places it in the 97th percentile, indicating an elevated likelihood of exploitation.
Key facts
- Severity: High (CVSS 2.0 base score 7.8)
- EPSS exploit prediction: 23% (97th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Microsoft Internet Information Server
- Published:
- Last modified:
Description
Microsoft Internet Information Services (IIS), 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
Frequently asked questions
- What is CVE-2007-0087?
- Microsoft Internet Information Services (IIS), 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
- How severe is CVE-2007-0087?
- CVE-2007-0087 has a CVSS 2.0 base score of 7.8, rated high severity.
- Is CVE-2007-0087 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 23% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2007-0087?
- CVE-2007-0087 affects Microsoft Internet Information Server. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2007-0087?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2007-0087 published?
- CVE-2007-0087 was published on 2007-01-05 and last updated on 2026-06-16.
References
- http://osvdb.org/33457
- http://www.securityfocus.com/archive/1/455833/100/0/threaded
- http://www.securityfocus.com/archive/1/455879/100/0/threaded
- http://www.securityfocus.com/archive/1/455882/100/0/threaded
- http://www.securityfocus.com/archive/1/455920/100/0/threaded
Affected products (1)
- cpe:2.3:a:microsoft:internet_information_server:*:*:*:*:*:*:*:*
More vulnerabilities in Microsoft Internet Information Server
- CVE-2008-0075 — Critical (CVSS 10.0): Unspecified vulnerability in Microsoft Internet Information Services (IIS) 5.1 through 6.0 allows remote attackers to…
- CVE-2001-0500 — Critical (CVSS 10.0): Buffer overflow in ISAPI extension (idq.dll) in Index Server 2.0 and Indexing Service 2000 in IIS 6.0 beta and earlier…
- CVE-1999-1011 — Critical (CVSS 10.0): The Remote Data Service (RDS) DataFactory component of Microsoft Data Access Components (MDAC) in IIS 3.x and 4.x…
- CVE-1999-0874 — Critical (CVSS 10.0): Buffer overflow in IIS 4.0 allows remote attackers to cause a denial of service via a malformed request for files with…
- CVE-1999-0407 — Critical (CVSS 10.0): By default, IIS 4.0 has a virtual directory /IISADMPWD which contains files that can be used as proxies for brute force…
- CVE-1999-1376 — Critical (CVSS 10.0): Buffer overflow in fpcount.exe in IIS 4.0 with FrontPage Server Extensions allows remote attackers to execute arbitrary…