CVE-2008-4299
A certain ActiveX control in the Microsoft Internet Authentication Service (IAS) Helper COM...
A certain ActiveX control in the Microsoft Internet Authentication Service (IAS) Helper COM Component in iashlpr.dll allows remote attackers to cause a denial of service (browser crash) via a large integer value in the first argument to the PutProperty method. NOTE: this issue was disclosed by an unreliable researcher, so it might be incorrect.
Exploit likelihood
What each source reports
NVD Score used
A certain ActiveX control in the Microsoft Internet Authentication Service (IAS) Helper COM Component in iashlpr.dll allows remote attackers to cause a denial of service (browser crash) via a large integer value in the first argument to the PutProperty method. NOTE: this issue was disclosed by an unreliable researcher, so it might be incorrect.
- Record
CVE-2008-4299- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-189
- Updated
- 2026-11-02
CVE List No score
A certain ActiveX control in the Microsoft Internet Authentication Service (IAS) Helper COM Component in iashlpr.dll allows remote attackers to cause a denial of service (browser crash) via a large integer value in the first argument to the PutProperty method. NOTE: this issue was disclosed by an unreliable researcher, so it might be incorrect.
- Record
CVE-2008-4299- Updated
- 2026-11-02
EUVDEUVD-2008-4282 No score
A certain ActiveX control in the Microsoft Internet Authentication Service (IAS) Helper COM Component in iashlpr.dll allows remote attackers to cause a denial of service (browser crash) via a large integer value in the first argument to the PutProperty method. NOTE: this issue was disclosed by an unreliable researcher, so it might be incorrect.
- Record
EUVD-2008-4282- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-6vj4-8grf-m438 No score
A certain ActiveX control in the Microsoft Internet Authentication Service (IAS) Helper COM...
A certain ActiveX control in the Microsoft Internet Authentication Service (IAS) Helper COM Component in iashlpr.dll allows remote attackers to cause a denial of service (browser crash) via a large integer value in the first argument to the PutProperty method. NOTE: this issue was disclosed by an unreliable researcher, so it might be incorrect.
- Record
GHSA-6vj4-8grf-m438- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2008-4299 is a medium vulnerability (CVSS 5.0) in Microsoft Internet Authentication Service Helper Com Component, published September 29, 2008. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 15.9%, the 96th percentile. No source names a fixed version.