CVE-2018-8631 in the critical feed json
A remote code execution vulnerability exists when Internet Explorer improperly accesses objects in memory, aka "Internet Explorer Memory Co…
published 2018-12-12 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-20242
- cvss
- 7.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 68.5%
- EPSS 68.5% chance of exploitation in 30 days, percentile 99.3%
- public exploits
- 1
- Exploit-DB
Summary
A remote code execution vulnerability exists when Internet Explorer improperly accesses objects in memory, aka "Internet Explorer Memory Corruption Vulnerability." This affects Internet Explorer 9, Internet Explorer 11, Internet Explorer 10.
Patch / fix
Timeline
- Published
- First public exploit (EDB-46001)
Exploit prediction
68.49% chance of exploitation in the next 30 days, higher than 99.3% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-46001 Microsoft Windows - 'jscript!JsArrayFunctionHeapSort' Out-of-Bounds Write dos, 2018-12-18
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.5 | CVSS:3.0/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-2018-8631
patch, vendor-advisory
-
exploit-db.com
/exploits/46001/
exploit, third-party-advisory, vdb-entry
-
securityfocus.com
/bid/106118
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2018-8631
- NVD CVE-2018-8631
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.