CVE-2017-8487
HighExploitedPublic exploitWindows OLE in Windows XP and Windows Server 2003 allows an attacker to execute code when a victim opens a specially crafted file or program aka "Windows olecnv32.dll Remote Code Execution Vulnerability."
Published Jun 15, 2017 · Updated May 12, 2026
Key Facts
Patch immediately- CVE-2017-8487 is a high-severity vulnerability (CVSS 7.8 v3) affecting Windows Server 2003 (Microsoft), Windows Xp (Microsoft), Microsoft Windows.
- It is exploited in the wild, listed in Industry KEV feed since Nov 16, 2017. Public exploit code is available.
- EPSS estimates a 54% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3
7.8
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
54%
Higher than 98.9% of all scored CVEs
Exploited in the wild
Yes
1 catalog listing
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2017-8487 brief as a PDF
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Description
Windows OLE in Windows XP and Windows Server 2003 allows an attacker to execute code when a victim opens a specially crafted file or program aka "Windows olecnv32.dll Remote Code Execution Vulnerability."
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Nov 16, 2017 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
3 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Windows Server 2003Microsoft | See advisory | n/a |
| Windows XpMicrosoft | See advisory | n/a |
| Microsoft Windows | >= Windows XP SP3, Windows XP x64 SP2, Windows Server 2003 SP2 | n/a |
Timeline
Publicly disclosed
Jun 15, 2017
Added to Industry KEV feed
Nov 16, 2017
Last updated
May 12, 2026
References
- advisory99013
- advisory1038702
- patchhttps://support.microsoft.com/en-us/help/4025218/security-update-for-windows-xp-and-windows-server-2003
- exploitExploitDB-42211
- exploit42211
FAQ
Common Questions.
Windows OLE in Windows XP and Windows Server 2003 allows an attacker to execute code when a victim opens a specially crafted file or program aka "Windows olecnv32.dll Remote Code Execution Vulnerability."
Affected: Windows Server 2003 (Microsoft); Windows Xp (Microsoft); Microsoft Windows versions >= Windows XP SP3, Windows XP x64 SP2, Windows Server 2003 SP2. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Nov 16, 2017.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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