CVE-2018-1004 — A remote code execution vulnerability exists in the way that the VBScript engine handles objects in memory, aka "Windows VBScript Engine Remote Code Execution Vulnerability." This affects Windows 7, Windows Server 2012 R2, Internet Explorer 9, Windows RT 8.1, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10

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HIGH

A remote code execution vulnerability exists in the way that the VBScript engine handles objects in memory, aka "Windows VBScript Engine Remote Code Execution Vulnerability." This affects Windows 7, Windows Server 2012 R2, Internet Explorer 9, Windows RT 8.1, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10

Published Apr 12, 2018

8.8

HIGH

CVSS 3.0

EPSS 18.73%

Description

A remote code execution vulnerability exists in the way that the VBScript engine handles objects in memory, aka "Windows VBScript Engine Remote Code Execution Vulnerability." This affects Windows 7, Windows Server 2012 R2, Internet Explorer 9, Windows RT 8.1, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10.

Affected products

Vendor Microsoft Product Internet Explorer 9 Default
n/a
- Version
  Windows Server 2008 for 32-bit Systems Service Pack 2
  Status
  affected
  Constraints
  -
- Version
  Windows Server 2008 for x64-based Systems Service Pack 2
  Status
  affected
  Constraints
  -
Vendor Microsoft Product Windows 10 Default
n/a
- Version
  32-bit Systems
  Status
  affected
  Constraints
  -
- Version
  Version 1511 for 32-bit Systems
  Status
  affected
  Constraints
  -
- Version
  Version 1511 for x64-based Systems
  Status
  affected
  Constraints
  -
- Version
  Version 1607 for 32-bit Systems
  Status
  affected
  Constraints
  -
- Version
  Version 1607 for x64-based Systems
  Status
  affected
  Constraints
  -
- Version
  Version 1703 for 32-bit Systems
  Status
  affected
  Constraints
  -
- Version
  Version 1703 for x64-based Systems
  Status
  affected
  Constraints
  -
- Version
  Version 1709 for 32-bit Systems
  Status
  affected
  Constraints
  -
- Version
  Version 1709 for x64-based Systems
  Status
  affected
  Constraints
  -
- Version
  x64-based Systems
  Status
  affected
  Constraints
  -
Vendor Microsoft Product Windows 7 Default
n/a
- Version
  32-bit Systems Service Pack 1
  Status
  affected
  Constraints
  -
- Version
  x64-based Systems Service Pack 1
  Status
  affected
  Constraints
  -
Vendor Microsoft Product Windows 8.1 Default
n/a
- Version
  32-bit systems
  Status
  affected
  Constraints
  -
- Version
  x64-based systems
  Status
  affected
  Constraints
  -
Vendor Microsoft Product Windows RT 8.1 Default
n/a
- Version
  Windows RT 8.1
  Status
  affected
  Constraints
  -
Vendor Microsoft Product Windows Server 2008 R2 Default
n/a
- Version
  Itanium-Based Systems Service Pack 1
  Status
  affected
  Constraints
  -
- Version
  x64-based Systems Service Pack 1
  Status
  affected
  Constraints
  -
- Version
  x64-based Systems Service Pack 1 (Server Core installation)
  Status
  affected
  Constraints
  -
Vendor Microsoft Product Windows Server 2012 Default
n/a
- Version
  (Server Core installation)
  Status
  affected
  Constraints
  -
Vendor Microsoft Product Windows Server 2012 R2 Default
n/a
- Version
  (Server Core installation)
  Status
  affected
  Constraints
  -
Vendor Microsoft Product Windows Server 2016 Default
n/a
- Version
  (Server Core installation)
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Microsoft

Internet Explorer 9

n/a

Version	Status	Constraints
Windows Server 2008 for 32-bit Systems Service Pack 2	affected	-
Windows Server 2008 for x64-based Systems Service Pack 2	affected	-

Microsoft

Windows 10

n/a

Version	Status	Constraints
32-bit Systems	affected	-
Version 1511 for 32-bit Systems	affected	-
Version 1511 for x64-based Systems	affected	-
Version 1607 for 32-bit Systems	affected	-
Version 1607 for x64-based Systems	affected	-
Version 1703 for 32-bit Systems	affected	-
Version 1703 for x64-based Systems	affected	-
Version 1709 for 32-bit Systems	affected	-
Version 1709 for x64-based Systems	affected	-
x64-based Systems	affected	-

Microsoft

Windows 7

n/a

Version	Status	Constraints
32-bit Systems Service Pack 1	affected	-
x64-based Systems Service Pack 1	affected	-

Microsoft

Windows 8.1

n/a

Version	Status	Constraints
32-bit systems	affected	-
x64-based systems	affected	-

Microsoft

Windows RT 8.1

n/a

Version	Status	Constraints
Windows RT 8.1	affected	-

Microsoft

Windows Server 2008 R2

n/a

Version	Status	Constraints
Itanium-Based Systems Service Pack 1	affected	-
x64-based Systems Service Pack 1	affected	-
x64-based Systems Service Pack 1 (Server Core installation)	affected	-

Microsoft

Windows Server 2012

n/a

Version	Status	Constraints
(Server Core installation)	affected	-

Microsoft

Windows Server 2012 R2

n/a

Version	Status	Constraints
(Server Core installation)	affected	-

Microsoft

Windows Server 2016

n/a

Version	Status	Constraints
(Server Core installation)	affected	-

Remediation

No remediation recorded yet.

Metrics

18.73% 0.18733

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.18733

Score over time

2021–2026

EPSS v1
EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v1
EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (40 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	18.73% (0.18733)	97.19th	v5 (v2026.06.15)
Sep 22, 2026	18.73% (0.18733)	97.14th	v5 (v2026.06.15)
Sep 21, 2026	17.06% (0.17064)	96.99th	v5 (v2026.06.15)
Sep 6, 2026	19.07% (0.19069)	97.13th	v5 (v2026.06.15)
Sep 5, 2026	17.17% (0.17172)	96.94th	v5 (v2026.06.15)
Aug 30, 2026	19.07% (0.19069)	97.11th	v5 (v2026.06.15)
Aug 28, 2026	17.17% (0.17172)	96.92th	v5 (v2026.06.15)
Aug 24, 2026	19.07% (0.19069)	97.09th	v5 (v2026.06.15)
Aug 23, 2026	17.17% (0.17172)	96.91th	v5 (v2026.06.15)
Jun 17, 2026	18.93% (0.18925)	96.93th	v5 (v2026.06.15)
Jun 15, 2026	17.79% (0.17793)	96.78th	v5 (v2026.06.15)
Oct 27, 2025	34.47% (0.34470)	96.81th	v4 (v2025.03.14)
Sep 28, 2025	35.55% (0.35549)	96.96th	v4 (v2025.03.14)
Aug 31, 2025	30.99% (0.30985)	96.58th	v4 (v2025.03.14)
Aug 4, 2025	24.13% (0.24134)	95.84th	v4 (v2025.03.14)
Apr 6, 2025	15.98% (0.15983)	94.21th	v4 (v2025.03.14)
Mar 30, 2025	9.54% (0.09543)	92.10th	v4 (v2025.03.14)
Mar 29, 2025	51.98% (0.51982)	96.95th	v4 (v2025.03.14)
Mar 17, 2025	9.54% (0.09543)	92.27th	v4 (v2025.03.14)
Dec 17, 2024	8.79% (0.08795)	94.55th	v3 (v2023.03.01)
Jul 16, 2024	12.44% (0.12435)	95.46th	v3 (v2023.03.01)
Mar 22, 2024	13.35% (0.13349)	95.45th	v3 (v2023.03.01)
Feb 20, 2024	15.12% (0.15115)	95.64th	v3 (v2023.03.01)
Dec 26, 2023	18.25% (0.18246)	95.71th	v3 (v2023.03.01)
Nov 29, 2023	13.76% (0.13756)	95.08th	v3 (v2023.03.01)
Sep 23, 2023	10.21% (0.10205)	94.25th	v3 (v2023.03.01)
Sep 2, 2023	9.96% (0.09965)	94.12th	v3 (v2023.03.01)
Apr 5, 2023	11.04% (0.11039)	94.21th	v3 (v2023.03.01)
Mar 7, 2023	10.96% (0.10960)	94.17th	v3 (v2023.03.01)
Mar 6, 2023	39.32% (0.39320)	98.11th	v2 (v2022.01.01)
Jan 6, 2023	39.32% (0.39320)	98.06th	v2 (v2022.01.01)
Aug 2, 2022	34.60% (0.34599)	97.70th	v2 (v2022.01.01)
May 12, 2022	32.42% (0.32419)	97.49th	v2 (v2022.01.01)
Mar 28, 2022	31.10% (0.31104)	96.45th	v2 (v2022.01.01)
Feb 22, 2022	27.14% (0.27139)	95.87th	v2 (v2022.01.01)
Feb 4, 2022	23.10% (0.23099)	94.56th	v2 (v2022.01.01)
Feb 3, 2022	17.55% (0.17549)	91.03th	v1
Jan 6, 2022	17.55% (0.17549)	90.92th	v1
Sep 1, 2021	17.55% (0.17549)	97.67th	v1
Apr 14, 2021	17.55% (0.17549)	0.00th	v1

Weaknesses (1)

CWE-787

Out-of-bounds Write

References (3)

http://www.securityfocus.com/bid/103657
vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1040655
vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-1004
x_refsource_CONFIRMPatchVendor Advisory

Link	Providers	Tags
http://www.securityfocus.com/bid/103657		vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1040655		vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-1004		x_refsource_CONFIRMPatchVendor Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner microsoft

Published Apr 12, 2018

Updated Aug 5, 2024

Reserved Dec 1, 2017

Link CVE-2018-1004

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2018-1004

Red Hat

Severity n/a

Public date n/a

Links CVE-2018-1004