Vulnerability Database

383,304

Total vulnerabilities in the database

CVE-2009-2576 — microsoft / ie

Resource Management Errors

Microsoft Internet Explorer 6.0.2900.2180 and earlier allows remote attackers to cause a denial of service (CPU and memory consumption) via a long Unicode string argument to the write method, a related issue to CVE-2009-2479. NOTE: it was later reported that 7.0.6000.16473 and earlier are also affected.

  • Published: Jul 22, 2009
  • Updated: Sep 13, 2026
  • CVE: CVE-2009-2576
  • Severity: Medium
  • Exploit:
  • CISA KEV:

CVSS v2:

  • Severity: Medium
  • Score: 5
  • AV:N/AC:L/Au:N/C:N/I:N/A:P

CWEs:

Software Affected versions
microsoft / ie All versions
microsoft / ie = 2.0
microsoft / ie = 2.0_beta
microsoft / ie = 3.0
microsoft / ie = 3.0.1
microsoft / ie = 3.01
microsoft / ie = 3.1
microsoft / ie = 4.0
microsoft / ie = 4.0-a
microsoft / ie = 4.0.1
microsoft / ie = 4.0a
microsoft / ie = 4.1
microsoft / ie = 4.5
microsoft / ie >= 4.x, <= 4
microsoft / ie = 5
microsoft / ie = 5.0
microsoft / ie = 5.0-sp1
microsoft / ie = 5.0-sp4
microsoft / ie = 5.0.1
microsoft / ie = 5.0_ta3
microsoft / ie = 5.1
microsoft / ie = 5.01
microsoft / ie = 5.1.1
microsoft / ie = 5.1.7
microsoft / ie = 5.2
microsoft / ie = 5.2.3
microsoft / ie = 5.22
microsoft / ie >= 5.x, <= 5
microsoft / ie = 6
microsoft / ie = 6-sp1
microsoft / internet_explorer <= 6.0.2900.2180
microsoft / internet_explorer = 3.0
microsoft / internet_explorer = 3.0.1
microsoft / internet_explorer = 3.0.2
microsoft / internet_explorer = 3.1
microsoft / internet_explorer = 3.2
microsoft / internet_explorer = 4.0
microsoft / internet_explorer = 4.0.1
microsoft / internet_explorer = 4.0.1-sp1
microsoft / internet_explorer = 4.0.1-sp2
microsoft / internet_explorer = 4.01
microsoft / internet_explorer = 4.1
microsoft / internet_explorer = 4.01-sp1
microsoft / internet_explorer = 4.5
microsoft / internet_explorer = 4.40.308
microsoft / internet_explorer = 4.40.520
microsoft / internet_explorer = 4.70.1155
microsoft / internet_explorer = 4.70.1158
microsoft / internet_explorer = 4.70.1215
microsoft / internet_explorer = 4.70.1300
microsoft / internet_explorer = 4.71.1008.3
microsoft / internet_explorer = 4.71.1712.6
microsoft / internet_explorer = 4.72.2106.8
microsoft / internet_explorer = 4.72.3110.8
microsoft / internet_explorer = 4.72.3612.1713
microsoft / internet_explorer = 5
microsoft / internet_explorer = 5.0
microsoft / internet_explorer = 5.0.1
microsoft / internet_explorer = 5.0.1-sp1
microsoft / internet_explorer = 5.0.1-sp2
microsoft / internet_explorer = 5.0.1-sp4
microsoft / internet_explorer = 5.00.0518.10
microsoft / internet_explorer = 5.00.0910.1309
microsoft / internet_explorer = 5.00.2014.0216
microsoft / internet_explorer = 5.00.2516.1900
microsoft / internet_explorer = 5.00.2614.3500
microsoft / internet_explorer = 5.00.2919.800
microsoft / internet_explorer = 5.00.2919.6307
microsoft / internet_explorer = 5.00.2920.0000
microsoft / internet_explorer = 5.00.3103.1000
microsoft / internet_explorer = 5.00.3105.0106
microsoft / internet_explorer = 5.00.3314.2101
microsoft / internet_explorer = 5.00.3315.1000
microsoft / internet_explorer = 5.00.3502.1000
microsoft / internet_explorer = 5.00.3700.1000
microsoft / internet_explorer = 5.01
microsoft / internet_explorer = 5.1
microsoft / internet_explorer = 5.01-sp1
microsoft / internet_explorer = 5.01-sp3
microsoft / internet_explorer = 5.2.3
microsoft / internet_explorer = 5.5
microsoft / internet_explorer = 5.5-preview
microsoft / internet_explorer = 5.5-sp1
microsoft / internet_explorer = 5.5-sp2
microsoft / internet_explorer = 5.50.3825.1300
microsoft / internet_explorer = 5.50.4030.2400
microsoft / internet_explorer = 5.50.4134.0100
microsoft / internet_explorer = 5.50.4134.0600
microsoft / internet_explorer = 5.50.4308.2900
microsoft / internet_explorer = 5.50.4522.1800
microsoft / internet_explorer = 5.50.4807.2300
microsoft / internet_explorer = 6
microsoft / internet_explorer = 6-sp1
microsoft / internet_explorer = 6.0
microsoft / internet_explorer = 6.0.2600
microsoft / internet_explorer = 6.0.2800
microsoft / internet_explorer = 6.0.2800.1106
microsoft / internet_explorer = 6.0.2900

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.