← Vulnerability feed

Vulnerability record · CVE-2010-1899 · published 15 September 2010

CVE-2010-1899: Microsoft IIS ASP stack consumption denial of service

Microsoft · Internet Information Server

A stack consumption flaw in the ASP implementation (asp.dll) of Microsoft IIS 5.1, 6.0, 7.0 and 7.5 lets a remote attacker crash the service with a crafted request involving repeated parameters. Because it takes down the web daemon, it matters for availability of any site relying on classic ASP.

4.3 CVSS 2.0 Medium EPSS 57% · top 1.0% CWE-119 · Memory buffer overflow
4.3CVSS 2.0 base score
57%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
4References
16 Jun 2026Last modified by NVD

Description

Stack consumption vulnerability in the ASP implementation in Microsoft Internet Information Services (IIS) 5.1, 6.0, 7.0, and 7.5 allows remote attackers to cause a denial of service (daemon outage) via a crafted request, related to asp.dll, aka "IIS Repeated Parameter Request Denial of Service Vulnerability."

AV:N/AC:M/Au:N/C:N/I:N/A:P

Automated analysis

Generated by VULONE's analysis model from the NVD record, CISA KEV and EPSS data on 19 September 2026. Confidence: medium.

medium priorityIt is a remote, unauthenticated availability-only flaw with high EPSS but no confirmed in-the-wild exploitation or KEV listing, and a vendor patch exists.

What it is

A stack consumption flaw in the ASP implementation (asp.dll) of Microsoft IIS 5.1, 6.0, 7.0 and 7.5 lets a remote attacker crash the service with a crafted request involving repeated parameters. Because it takes down the web daemon, it matters for availability of any site relying on classic ASP.

Impact

An attacker can cause a denial of service, taking the IIS daemon offline until it is restarted. There is no confidentiality or integrity impact; only availability is affected.

Attack surface

Reachable over the network via HTTP requests to an ASP-handling endpoint; no authentication is required per the CVSS vector (Au:N). No user interaction is indicated.

Exploitation

Not listed in CISA KEV and no reference tags indicate public exploit code, but EPSS is high at roughly 0.57 (99th percentile), suggesting elevated likelihood of attempted exploitation.

What to do

  • Apply Microsoft security bulletin MS10-065, which addresses this vulnerability, as the first action.
  • If patching is delayed, disable or restrict classic ASP on IIS servers that do not need it.
  • Place IIS hosts behind a reverse proxy or WAF that can rate-limit or block requests with excessive repeated parameters.
  • Monitor and auto-restart the IIS worker process to limit outage duration where patching is not yet possible.

Detection

  • Alert on IIS worker process (w3wp.exe) crashes or unexpected restarts correlated with ASP requests.
  • Inspect web logs for requests to .asp endpoints containing unusually large numbers of repeated query or form parameters.
  • Track HTTP 500/503 spikes and daemon outage events on IIS hosts running classic ASP.

This assessment is produced automatically and is not human-reviewed. Verify against the vendor advisory before acting on it.

Affected products

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

References

LinkTags
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-065
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7127
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-065
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7127

Track CVE-2010-1899 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

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

9.8CVE-2017-7269IIS 6.0 WebDAV ScStoragePathFromUrl buffer overflow enables remote code executionA buffer overflow in the ScStoragePathFromUrl function of the WebDAV service in IIS 6.0 on Windows Server 2003 R2 allows remote code execution via a …KEVEPSS 100%analysed10.0CVE-2010-3972Microsoft IIS FTP Service heap buffer overflow via crafted FTP commandA heap-based buffer overflow exists in the TELNET_STREAM_CONTEXT::OnSendData function in ftpsvc.dll in Microsoft FTP Service 7.0 and 7.5 as shipped w…EPSS 95%analysed10.0CVE-2008-4301Microsoft internet information services vulnerabilityA certain ActiveX control in iisext.dll in Microsoft Internet Information Services (IIS) allows remote attackers to set a password via a string argum…EPSS 17%10.0CVE-2008-0075Microsoft IIS ASP code injection allows remote code executionCVE-2008-0075 is an unspecified code injection flaw in Microsoft Internet Information Services (IIS) 5.1 through 6.0 that is triggered by crafted inp…EPSS 57%analysed10.0CVE-2007-2815IIS 5.0 webhits.dll hit-highlighting authentication bypassThe hit-highlighting feature in webhits.dll on Microsoft IIS 5.0 relies only on Windows NT ACLs, so it fails to enforce NTLM or basic authentication.…EPSS 73%analysed10.0CVE-2003-0224Microsoft internet information services vulnerabilityBuffer overflow in ssinc.dll for Microsoft Internet Information Services (IIS) 5.0 allows local users to execute arbitrary code via a web page with a…EPSS 18%10.0CVE-2001-0500Microsoft IIS Index Server ISAPI idq.dll buffer overflowA buffer overflow in the ISAPI extension idq.dll, used by Index Server 2.0 and Indexing Service 2000 in IIS 6.0 beta and earlier, is triggered by a l…EPSS 97%analysed10.0CVE-1999-1011Microsoft MDAC RDS DataFactory unsafe methods allow remote command executionThe Remote Data Service (RDS) DataFactory component of Microsoft Data Access Components (MDAC), as shipped with IIS 3.x and 4.x, exposes unsafe metho…EPSS 77%analysed

Source: NIST National Vulnerability Database (record CVE-2010-1899), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.