CVE-2018-8178 — A remote code execution vulnerability exists in the way that Microsoft browsers access objects in memory, aka "Microsoft Browser Memory Corruption Vulnerability." This affects ChakraCore, Internet Explorer 11, Microsoft Edge

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HIGH

A remote code execution vulnerability exists in the way that Microsoft browsers access objects in memory, aka "Microsoft Browser Memory Corruption Vulnerability." This affects ChakraCore, Internet Explorer 11, Microsoft Edge

Published May 9, 2018

7.5

HIGH

CVSS 3.0

EPSS 15.75%

Description

A remote code execution vulnerability exists in the way that Microsoft browsers access objects in memory, aka "Microsoft Browser Memory Corruption Vulnerability." This affects ChakraCore, Internet Explorer 11, Microsoft Edge.

Affected products

Vendor Microsoft Product ChakraCore Default
n/a
- Version
  ChakraCore
  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 x64-based Systems
  Status
  affected
  Constraints
  -
- Version
  Windows 10 Version 1803 for 32-bit Systems
  Status
  affected
  Constraints
  -
- Version
  Windows 10 Version 1803 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
  -
Vendor Microsoft Product Microsoft Edge 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 x64-based Systems
  Status
  affected
  Constraints
  -
- Version
  Windows 10 Version 1803 for 32-bit Systems
  Status
  affected
  Constraints
  -
- Version
  Windows 10 Version 1803 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 Server 2016
  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

ChakraCore

n/a

Version	Status	Constraints
ChakraCore	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 x64-based Systems	affected	-
Windows 10 Version 1803 for 32-bit Systems	affected	-
Windows 10 Version 1803 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	-

Microsoft

Microsoft Edge

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 x64-based Systems	affected	-
Windows 10 Version 1803 for 32-bit Systems	affected	-
Windows 10 Version 1803 for x64-based Systems	affected	-
Windows 10 for 32-bit Systems	affected	-
Windows 10 for x64-based Systems	affected	-
Windows Server 2016	affected	-

Remediation

No remediation recorded yet.

Metrics

15.75% 0.15745

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

EPSS probability 0.15745

Score over time

2021–2026

EPSS v1
EPSS v5
EPSS v2
EPSS v3
EPSS v4

Percentile over time

EPSS v1
EPSS v5
EPSS v2
EPSS v3
EPSS v4

Table of values (35 key points)

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

Date	Score	Percentile	Model
Oct 1, 2026	15.75% (0.15745)	96.77th	v5 (v2026.06.15)
Aug 14, 2026	15.59% (0.15590)	96.53th	v5 (v2026.06.15)
Jun 15, 2026	14.25% (0.14250)	96.12th	v5 (v2026.06.15)
Jan 29, 2026	20.39% (0.20394)	95.37th	v4 (v2025.03.14)
Nov 21, 2025	19.06% (0.19061)	95.08th	v4 (v2025.03.14)
Nov 18, 2025	23.89% (0.23894)	95.66th	v4 (v2025.03.14)
Sep 27, 2025	19.95% (0.19945)	95.29th	v4 (v2025.03.14)
Aug 31, 2025	15.60% (0.15604)	94.43th	v4 (v2025.03.14)
May 3, 2025	9.86% (0.09861)	92.58th	v4 (v2025.03.14)
Mar 30, 2025	6.25% (0.06251)	89.95th	v4 (v2025.03.14)
Mar 29, 2025	52.42% (0.52421)	96.98th	v4 (v2025.03.14)
Mar 17, 2025	5.26% (0.05257)	89.27th	v4 (v2025.03.14)
Dec 17, 2024	52.01% (0.52010)	97.67th	v3 (v2023.03.01)
Apr 18, 2024	6.14% (0.06136)	93.44th	v3 (v2023.03.01)
Mar 18, 2024	6.35% (0.06352)	93.47th	v3 (v2023.03.01)
Feb 22, 2024	6.38% (0.06383)	93.43th	v3 (v2023.03.01)
Jan 23, 2024	5.80% (0.05796)	92.65th	v3 (v2023.03.01)
Dec 27, 2023	5.71% (0.05708)	92.57th	v3 (v2023.03.01)
Oct 21, 2023	5.06% (0.05064)	92.00th	v3 (v2023.03.01)
Sep 30, 2023	3.91% (0.03910)	90.90th	v3 (v2023.03.01)
Sep 3, 2023	4.37% (0.04371)	91.31th	v3 (v2023.03.01)
Jul 8, 2023	3.89% (0.03891)	90.70th	v3 (v2023.03.01)
May 8, 2023	7.14% (0.07140)	92.95th	v3 (v2023.03.01)
May 7, 2023	3.89% (0.03891)	90.60th	v3 (v2023.03.01)
Mar 7, 2023	3.86% (0.03860)	90.52th	v3 (v2023.03.01)
Mar 6, 2023	38.08% (0.38081)	97.96th	v2 (v2022.01.01)
Feb 3, 2023	38.08% (0.38081)	97.92th	v2 (v2022.01.01)
Aug 30, 2022	33.43% (0.33428)	97.56th	v2 (v2022.01.01)
Jun 9, 2022	31.29% (0.31286)	97.44th	v2 (v2022.01.01)
Apr 25, 2022	30.00% (0.29997)	97.35th	v2 (v2022.01.01)
Mar 22, 2022	26.12% (0.26119)	95.72th	v2 (v2022.01.01)
Feb 13, 2022	22.18% (0.22185)	94.37th	v2 (v2022.01.01)
Feb 4, 2022	20.50% (0.20497)	94.03th	v2 (v2022.01.01)
Feb 3, 2022	15.58% (0.15582)	90.12th	v5 (v2026.06.15)
Apr 14, 2021	15.58% (0.15582)	0.00th	v1

Weaknesses (1)

CWE-787

Out-of-bounds Write

References (3)

http://www.securityfocus.com/bid/104076
vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1040844
vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8178
x_refsource_CONFIRMPatchVendor Advisory

Link	Providers	Tags
http://www.securityfocus.com/bid/104076		vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1040844		vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8178		x_refsource_CONFIRMPatchVendor Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner microsoft

Published May 9, 2018

Updated Aug 5, 2024

Reserved Mar 14, 2018

Link CVE-2018-8178

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2018-8178

Red Hat

Severity n/a

Public date n/a

Links CVE-2018-8178