CVE-1999-0874
Buffer overflow in IIS 4.0 allows remote attackers to cause a denial of service via a malformed request for files with .HTR, .IDC, or .STM…
- 10.0HighCVSS base score
- 74.7%Exploitation in 30 daysEPSS · top 0.5% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 6Public exploitsMetasploit, Nuclei and Exploit-DB
Description
Buffer overflow in IIS 4.0 allows remote attackers to cause a denial of service via a malformed request for files with .HTR, .IDC, or .STM extensions.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list a Metasploit module and 5 Exploit-DB entries for it.
Show the exploits6
Metasploit modules1 module
- MS02-018 Microsoft IIS 4.0 .HTR Path Overflow (Metasploit module) (opens in a new tab)
exploit/windows/iis/ms02_018_htrRank gooddisclosed 10 Apr 2002
Exploit-DB5 entries
- Microsoft IIS 4.0 - '.htr' Path Overflow (MS02-018) (Metasploit) (Exploit-DB entry) (opens in a new tab)
EDB-ID 16468remote, windowspublished 30 Apr 2010Verified
- Microsoft IIS 4.0 - Remote Buffer Overflow (1) (Exploit-DB entry) (opens in a new tab)
EDB-ID 19245remote, windowspublished 15 Jun 1999Verified
- Microsoft IIS 4.0 - Remote Buffer Overflow (2) (Exploit-DB entry) (opens in a new tab)
EDB-ID 19246remote, windowspublished 15 Jun 1999Verified
- Microsoft IIS 4.0 - Remote Buffer Overflow (3) (Exploit-DB entry) (opens in a new tab)
EDB-ID 19247remote, linuxpublished 15 Jun 1999Verified
- Microsoft IIS 4.0 - Remote Buffer Overflow (4) (Exploit-DB entry) (opens in a new tab)
EDB-ID 19248remote, windowspublished 15 Jun 1999Verified
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
- 6 months later
· 6 months later
Published
- 24 years later
· 24 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 74.7% · top 0.5% of all CVEs (10 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 10.0.
Affected products
n/a
- affected n/a
References
5
- AD06081999 (opens in a new tab)third-party-advisoryx_refsource_EEYEx_transferred
- oval:org.mitre.oval:def:915 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- MS99-019 (opens in a new tab)vendor-advisoryx_refsource_MSx_transferred
- Q234905 (opens in a new tab)vendor-advisoryx_refsource_MSKBx_transferred
- J-048 (opens in a new tab)third-party-advisorygovernment-resourcex_refsource_CIACx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-1999-0855 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-1999-0874)Record last updated .