CVE-2018-8373 kev in the critical feed json
A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer, aka "Scri…
published 2018-08-15 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-20017
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Exploited
- added 2022-03-25
- epss
- 61.8%
- EPSS 61.8% chance of exploitation in 30 days, percentile 99.1%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
cisa required action Apply updates per vendor instructions.
Timeline
- Found exploited as a 0-day (Project Zero)
- 0-day patched (Project Zero)
- Published
- Added to CISA KEV
- CISA patch deadline
- CISA SSVC: exploitation active
Known exploited
- Added
- 4 y ago
- Patch by
- 2022-04-15 (4 y ago)
- Ransomware
- Not known
- Required action
- Apply updates per vendor instructions.
- Vendor, product
- Microsoft, Internet Explorer Scripting Engine
- CISA name
- Microsoft Scripting Engine Memory Corruption Vulnerability
Zero-day
Detected in real attacks while still unknown to the vendor and the public, per Google Project Zero's 0day In-the-Wild tracker.
- Found
- 2018-07-11
- Patched
- 2018-08-14
- Details
- project zero tracker
CISA SSVC
- Exploitation
- Active, exploited in the wild
- Automatable
- no
- Technical impact
- total
- Assessed
- 21 mo ago
Exploit prediction
61.77% chance of exploitation in the next 30 days, higher than 99.1% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.6 | AV:N/AC:H/Au:N/C:C/I:C/A:C |
Affected products
- Microsoft Internet Explorer 9
- Microsoft Internet Explorer 11
- Microsoft Internet Explorer 10
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2018-8373
patch, vendor-advisory
-
securitytracker.com
/id/1041483
vdb-entry, broken-link, third-party-advisory
-
securityfocus.com
/bid/105037
vdb-entry, broken-link, third-party-advisory
-
cisa.gov
/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-8373
government-resource, us-government-resource
Sources
- CVE List CVE-2018-8373
- NVD CVE-2018-8373
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