CVE-2018-8653 — A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer, aka "Scripting Engine Memory Corruption Vulnerability." This affects Internet Explorer 9, Internet Explorer 11, Internet Explorer 10

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HIGH KEV

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer, aka "Scripting Engine Memory Corruption Vulnerability." This affects Internet Explorer 9, Internet Explorer 11, Internet Explorer 10

Published Dec 20, 2018 ·Due May 3, 2022

7.5

HIGH

CVSS 3.1

EPSS 29.61%

Description

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer, aka "Scripting Engine Memory Corruption Vulnerability." This affects Internet Explorer 9, Internet Explorer 11, Internet Explorer 10. This CVE ID is unique from CVE-2018-8643.

Affected products

Vendor Microsoft Product Internet Explorer 10 Default
n/a
- Version
  Windows Server 2012
  Status
  affected
  Constraints
  -
Vendor Microsoft Product Internet Explorer 11 Default
n/a
- Version
  Windows 10 Version 1607 for 32-bit Systems
  Status
  affected
  Constraints
  -
- Version
  Windows 10 Version 1607 for x64-based Systems
  Status
  affected
  Constraints
  -
- Version
  Windows 10 Version 1703 for 32-bit Systems
  Status
  affected
  Constraints
  -
- Version
  Windows 10 Version 1703 for x64-based Systems
  Status
  affected
  Constraints
  -
- Version
  Windows 10 Version 1709 for 32-bit Systems
  Status
  affected
  Constraints
  -
- Version
  Windows 10 Version 1709 for ARM64-based Systems
  Status
  affected
  Constraints
  -
- Version
  Windows 10 Version 1709 for x64-based Systems
  Status
  affected
  Constraints
  -
- Version
  Windows 10 Version 1803 for 32-bit Systems
  Status
  affected
  Constraints
  -
- Version
  Windows 10 Version 1803 for ARM64-based Systems
  Status
  affected
  Constraints
  -
- Version
  Windows 10 Version 1803 for x64-based Systems
  Status
  affected
  Constraints
  -
- Version
  Windows 10 Version 1809 for 32-bit Systems
  Status
  affected
  Constraints
  -
- Version
  Windows 10 Version 1809 for ARM64-based Systems
  Status
  affected
  Constraints
  -
- Version
  Windows 10 Version 1809 for x64-based Systems
  Status
  affected
  Constraints
  -
- Version
  Windows 10 for 32-bit Systems
  Status
  affected
  Constraints
  -
- Version
  Windows 10 for x64-based Systems
  Status
  affected
  Constraints
  -
- Version
  Windows 7 for 32-bit Systems Service Pack 1
  Status
  affected
  Constraints
  -
- Version
  Windows 7 for x64-based Systems Service Pack 1
  Status
  affected
  Constraints
  -
- Version
  Windows 8.1 for 32-bit systems
  Status
  affected
  Constraints
  -
- Version
  Windows 8.1 for x64-based systems
  Status
  affected
  Constraints
  -
- Version
  Windows RT 8.1
  Status
  affected
  Constraints
  -
- Version
  Windows Server 2008 R2 for x64-based Systems Service Pack 1
  Status
  affected
  Constraints
  -
- Version
  Windows Server 2012 R2
  Status
  affected
  Constraints
  -
- Version
  Windows Server 2016
  Status
  affected
  Constraints
  -
- Version
  Windows Server 2019
  Status
  affected
  Constraints
  -
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
  -

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 10

n/a

Version	Status	Constraints
Windows Server 2012	affected	-

Microsoft

Internet Explorer 11

n/a

Version	Status	Constraints
Windows 10 Version 1607 for 32-bit Systems	affected	-
Windows 10 Version 1607 for x64-based Systems	affected	-
Windows 10 Version 1703 for 32-bit Systems	affected	-
Windows 10 Version 1703 for x64-based Systems	affected	-
Windows 10 Version 1709 for 32-bit Systems	affected	-
Windows 10 Version 1709 for ARM64-based Systems	affected	-
Windows 10 Version 1709 for x64-based Systems	affected	-
Windows 10 Version 1803 for 32-bit Systems	affected	-
Windows 10 Version 1803 for ARM64-based Systems	affected	-
Windows 10 Version 1803 for x64-based Systems	affected	-
Windows 10 Version 1809 for 32-bit Systems	affected	-
Windows 10 Version 1809 for ARM64-based Systems	affected	-
Windows 10 Version 1809 for x64-based Systems	affected	-
Windows 10 for 32-bit Systems	affected	-
Windows 10 for x64-based Systems	affected	-
Windows 7 for 32-bit Systems Service Pack 1	affected	-
Windows 7 for x64-based Systems Service Pack 1	affected	-
Windows 8.1 for 32-bit systems	affected	-
Windows 8.1 for x64-based systems	affected	-
Windows RT 8.1	affected	-
Windows Server 2008 R2 for x64-based Systems Service Pack 1	affected	-
Windows Server 2012 R2	affected	-
Windows Server 2016	affected	-
Windows Server 2019	affected	-

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	-

Remediation

No remediation recorded yet.

Metrics

29.61% 0.29606

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

EPSS probability 0.29606

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 (44 key points)

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

Date	Score	Percentile	Model
Oct 1, 2026	29.61% (0.29606)	98.14th	v5 (v2026.06.15)
Aug 24, 2026	29.82% (0.29822)	98.06th	v5 (v2026.06.15)
Jul 24, 2026	24.30% (0.24305)	97.63th	v5 (v2026.06.15)
Jun 15, 2026	29.11% (0.29110)	97.91th	v5 (v2026.06.15)
May 10, 2026	35.57% (0.35565)	97.10th	v4 (v2025.03.14)
Apr 13, 2026	24.96% (0.24965)	96.17th	v4 (v2025.03.14)
Mar 19, 2026	19.85% (0.19853)	95.38th	v4 (v2025.03.14)
Dec 16, 2025	22.98% (0.22985)	95.71th	v4 (v2025.03.14)
Dec 14, 2025	33.63% (0.33635)	96.77th	v4 (v2025.03.14)
Nov 21, 2025	22.87% (0.22874)	95.67th	v4 (v2025.03.14)
Nov 18, 2025	18.82% (0.18822)	94.84th	v4 (v2025.03.14)
Oct 30, 2025	22.87% (0.22874)	95.65th	v4 (v2025.03.14)
Oct 2, 2025	29.38% (0.29375)	96.45th	v4 (v2025.03.14)
Jun 15, 2025	35.30% (0.35296)	96.83th	v4 (v2025.03.14)
Jun 6, 2025	42.39% (0.42386)	97.27th	v4 (v2025.03.14)
Apr 24, 2025	45.09% (0.45090)	97.38th	v4 (v2025.03.14)
Apr 8, 2025	44.03% (0.44027)	97.28th	v4 (v2025.03.14)
Mar 30, 2025	40.59% (0.40595)	97.08th	v4 (v2025.03.14)
Mar 29, 2025	82.74% (0.82743)	99.05th	v4 (v2025.03.14)
Mar 17, 2025	40.59% (0.40595)	97.04th	v4 (v2025.03.14)
Dec 17, 2024	10.01% (0.10007)	94.87th	v3 (v2023.03.01)
Nov 29, 2024	5.23% (0.05226)	93.29th	v3 (v2023.03.01)
Oct 29, 2024	4.16% (0.04162)	92.40th	v3 (v2023.03.01)
Aug 8, 2024	2.40% (0.02401)	90.08th	v3 (v2023.03.01)
Jul 15, 2024	5.44% (0.05435)	93.23th	v3 (v2023.03.01)
Jun 21, 2024	4.73% (0.04730)	92.71th	v3 (v2023.03.01)
Jun 2, 2024	5.07% (0.05065)	92.91th	v3 (v2023.03.01)
May 12, 2024	2.59% (0.02592)	90.22th	v3 (v2023.03.01)
Sep 5, 2023	9.35% (0.09348)	93.94th	v3 (v2023.03.01)
Sep 4, 2023	10.62% (0.10620)	94.31th	v3 (v2023.03.01)
Jul 3, 2023	9.35% (0.09348)	93.86th	v3 (v2023.03.01)
Mar 7, 2023	12.65% (0.12651)	94.52th	v3 (v2023.03.01)
Mar 6, 2023	13.37% (0.13370)	95.72th	v2 (v2022.01.01)
Jan 20, 2023	13.37% (0.13370)	95.53th	v2 (v2022.01.01)
Dec 6, 2022	12.68% (0.12683)	95.43th	v2 (v2022.01.01)
Nov 2, 2022	10.70% (0.10702)	94.52th	v2 (v2022.01.01)
Sep 26, 2022	8.36% (0.08358)	93.35th	v2 (v2022.01.01)
Jun 16, 2022	7.62% (0.07619)	92.39th	v2 (v2022.01.01)
Apr 1, 2022	5.96% (0.05960)	89.66th	v2 (v2022.01.01)
Feb 4, 2022	5.96% (0.05960)	77.50th	v2 (v2022.01.01)
Feb 3, 2022	11.50% (0.11504)	88.31th	v1
Jan 6, 2022	11.50% (0.11504)	88.17th	v1
Sep 1, 2021	11.50% (0.11504)	95.62th	v1
Apr 14, 2021	11.50% (0.11504)	0.00th	v1

Weaknesses (1)

CWE-787

Out-of-bounds Write

References (3)

http://www.securityfocus.com/bid/106255
vdb-entryx_refsource_BIDBroken LinkThird Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8653
x_refsource_CONFIRMPatchVendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-8653
government-resourceUS Government Resource

Link	Providers	Tags
http://www.securityfocus.com/bid/106255		vdb-entryx_refsource_BIDBroken LinkThird Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8653		x_refsource_CONFIRMPatchVendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-8653		government-resourceUS Government Resource