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 Aug 15, 2018 ·Due Apr 15, 2022
7.5
HIGHCVSS 3.1
EPSS 61.91%
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-2018-8353, CVE-2018-8355, CVE-2018-8359, CVE-2018-8371, CVE-2018-8372, CVE-2018-8385, CVE-2018-8389, CVE-2018-8390.
Affected products
-
- Version Windows Server 2012StatusaffectedConstraints-
- Version
-
- Version Windows 10 Version 1607 for 32-bit SystemsStatusaffectedConstraints-
- Version Windows 10 Version 1607 for x64-based SystemsStatusaffectedConstraints-
- Version Windows 10 Version 1703 for 32-bit SystemsStatusaffectedConstraints-
- Version Windows 10 Version 1703 for x64-based SystemsStatusaffectedConstraints-
- Version Windows 10 Version 1709 for 32-bit SystemsStatusaffectedConstraints-
- Version Windows 10 Version 1709 for x64-based SystemsStatusaffectedConstraints-
- Version Windows 10 Version 1803 for 32-bit SystemsStatusaffectedConstraints-
- Version Windows 10 Version 1803 for x64-based SystemsStatusaffectedConstraints-
- Version Windows 10 for 32-bit SystemsStatusaffectedConstraints-
- Version Windows 10 for x64-based SystemsStatusaffectedConstraints-
- Version Windows 7 for 32-bit Systems Service Pack 1StatusaffectedConstraints-
- Version Windows 7 for x64-based Systems Service Pack 1StatusaffectedConstraints-
- Version Windows 8.1 for 32-bit systemsStatusaffectedConstraints-
- Version Windows 8.1 for x64-based systemsStatusaffectedConstraints-
- Version Windows RT 8.1StatusaffectedConstraints-
- Version Windows Server 2008 R2 for x64-based Systems Service Pack 1StatusaffectedConstraints-
- Version Windows Server 2012 R2StatusaffectedConstraints-
- Version Windows Server 2016StatusaffectedConstraints-
- Version
-
- Version Windows Server 2008 for 32-bit Systems Service Pack 2StatusaffectedConstraints-
- Version Windows Server 2008 for x64-based Systems Service Pack 2StatusaffectedConstraints-
- Version
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 |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Microsoft | Internet Explorer 11 | n/a |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Microsoft | Internet Explorer 9 | n/a |
|
Configuration 1
AND
- 11
Running on/with
OR
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- r2
- r2
- n/a
Configuration 2
AND
- 10
Running on/with
- n/a
Configuration 3
AND
- 9
Running on/with
- n/a
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
7.5 HIGH NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
No CVSS v3.0 score for this CVE.
7.6 HIGH NVD
AV:N/AC:H/Au:N/C:C/I:C/A:C
Access Vector Network
Access Complexity High
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete
Listed in CISA KEV KEV
Date Added
Mar 25, 2022
Patch Due
Apr 15, 2022
Required Action
Apply updates per vendor instructions.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
ActiveAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed Feb 7, 2025 · SSVC 2.0.3
61.91% 0.61912
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.61912
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 (55 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 61.91% (0.61912) | 99.15th | v5 (v2026.06.15) |
| Aug 24, 2026 | 61.91% (0.61912) | 99.11th | v5 (v2026.06.15) |
| Jul 24, 2026 | 54.46% (0.54457) | 98.91th | v5 (v2026.06.15) |
| Jun 15, 2026 | 61.91% (0.61912) | 99.06th | v5 (v2026.06.15) |
| Oct 29, 2025 | 82.43% (0.82429) | 99.18th | v4 (v2025.03.14) |
| Oct 22, 2025 | 80.80% (0.80797) | 99.09th | v4 (v2025.03.14) |
| Apr 12, 2025 | 74.09% (0.74093) | 98.76th | v4 (v2025.03.14) |
| Apr 9, 2025 | 75.64% (0.75637) | 98.84th | v4 (v2025.03.14) |
| Mar 30, 2025 | 82.04% (0.82037) | 99.16th | v4 (v2025.03.14) |
| Mar 29, 2025 | 89.29% (0.89289) | 99.44th | v4 (v2025.03.14) |
| Mar 25, 2025 | 80.51% (0.80505) | 99.11th | v4 (v2025.03.14) |
| Mar 23, 2025 | 78.30% (0.78303) | 98.96th | v4 (v2025.03.14) |
| Mar 17, 2025 | 74.77% (0.74766) | 98.79th | v4 (v2025.03.14) |
| Feb 8, 2025 | 83.20% (0.83196) | 98.70th | v3 (v2023.03.01) |
| Dec 17, 2024 | 87.96% (0.87959) | 98.91th | v3 (v2023.03.01) |
| Dec 12, 2024 | 89.16% (0.89158) | 98.86th | v3 (v2023.03.01) |
| Aug 13, 2024 | 89.63% (0.89632) | 98.82th | v3 (v2023.03.01) |
| Aug 10, 2024 | 55.00% (0.54995) | 97.70th | v3 (v2023.03.01) |
| Jul 25, 2024 | 89.63% (0.89632) | 98.81th | v3 (v2023.03.01) |
| Jun 24, 2024 | 92.16% (0.92164) | 98.96th | v3 (v2023.03.01) |
| May 30, 2024 | 91.70% (0.91699) | 98.90th | v3 (v2023.03.01) |
| Apr 30, 2024 | 93.91% (0.93905) | 99.11th | v3 (v2023.03.01) |
| Apr 3, 2024 | 93.23% (0.93229) | 99.02th | v3 (v2023.03.01) |
| Mar 10, 2024 | 95.99% (0.95986) | 99.42th | v3 (v2023.03.01) |
| Feb 15, 2024 | 96.24% (0.96243) | 99.47th | v3 (v2023.03.01) |
| Jan 27, 2024 | 96.06% (0.96057) | 99.37th | v3 (v2023.03.01) |
| Jan 6, 2024 | 96.94% (0.96937) | 99.66th | v3 (v2023.03.01) |
| Dec 15, 2023 | 96.78% (0.96778) | 99.60th | v3 (v2023.03.01) |
| Nov 24, 2023 | 96.75% (0.96748) | 99.58th | v3 (v2023.03.01) |
| Oct 20, 2023 | 96.54% (0.96544) | 99.46th | v3 (v2023.03.01) |
| Oct 2, 2023 | 96.66% (0.96659) | 99.50th | v3 (v2023.03.01) |
| Sep 5, 2023 | 96.56% (0.96560) | 99.44th | v3 (v2023.03.01) |
| Sep 4, 2023 | 96.18% (0.96182) | 99.30th | v3 (v2023.03.01) |
| Aug 27, 2023 | 96.56% (0.96560) | 99.43th | v3 (v2023.03.01) |
| Aug 9, 2023 | 96.48% (0.96478) | 99.38th | v3 (v2023.03.01) |
| Jul 25, 2023 | 96.45% (0.96454) | 99.36th | v3 (v2023.03.01) |
| Jun 21, 2023 | 96.47% (0.96466) | 99.34th | v3 (v2023.03.01) |
| Jun 5, 2023 | 96.41% (0.96408) | 99.31th | v3 (v2023.03.01) |
| May 16, 2023 | 96.50% (0.96496) | 99.33th | v3 (v2023.03.01) |
| May 2, 2023 | 96.45% (0.96455) | 99.30th | v3 (v2023.03.01) |
| Apr 12, 2023 | 95.85% (0.95846) | 99.08th | v3 (v2023.03.01) |
| Mar 31, 2023 | 95.33% (0.95326) | 98.92th | v3 (v2023.03.01) |
| Mar 11, 2023 | 95.04% (0.95040) | 98.82th | v3 (v2023.03.01) |
| Mar 7, 2023 | 96.95% (0.96952) | 99.50th | v3 (v2023.03.01) |
| Mar 6, 2023 | 56.07% (0.56075) | 98.82th | v2 (v2022.01.01) |
| Dec 6, 2022 | 56.07% (0.56075) | 98.77th | v2 (v2022.01.01) |
| Sep 15, 2022 | 58.50% (0.58503) | 98.80th | v2 (v2022.01.01) |
| Aug 1, 2022 | 60.02% (0.60020) | 98.85th | v2 (v2022.01.01) |
| Jun 28, 2022 | 58.53% (0.58533) | 98.79th | v2 (v2022.01.01) |
| May 22, 2022 | 57.94% (0.57938) | 98.74th | v2 (v2022.01.01) |
| Feb 9, 2022 | 59.82% (0.59825) | 98.60th | v2 (v2022.01.01) |
| Feb 4, 2022 | 58.42% (0.58424) | 98.56th | v2 (v2022.01.01) |
| Feb 3, 2022 | 43.80% (0.43797) | 98.85th | v1 |
| Sep 1, 2021 | 43.80% (0.43797) | 99.47th | v1 |
| Apr 14, 2021 | 43.80% (0.43797) | 0.00th | v1 |
Weaknesses (1)
References (4)
- http://www.securityfocus.com/bid/105037 vdb-entryx_refsource_BIDBroken LinkThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1041483 vdb-entryx_refsource_SECTRACKBroken LinkThird Party AdvisoryVDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8373 x_refsource_CONFIRMPatchVendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-8373 government-resourceUS Government Resource
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/105037 | vdb-entryx_refsource_BIDBroken LinkThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1041483 | vdb-entryx_refsource_SECTRACKBroken LinkThird Party AdvisoryVDB Entry | |
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8373 | x_refsource_CONFIRMPatchVendor Advisory | |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-8373 | government-resourceUS Government Resource |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner microsoft
Published Aug 15, 2018
Updated Oct 21, 2025
Reserved Mar 14, 2018
Link CVE-2018-8373
CISA Vulnrichment
Updated Feb 7, 2025