CVE-2018-0840 in the critical feed json
Internet Explorer in Microsoft Windows 7 SP1, Windows Server 2008 R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, and I…
published 2018-02-15 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-1640
- cvss
- 7.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 53.1%
- EPSS 53.1% chance of exploitation in 30 days, percentile 98%
- public exploits
- 1
- Exploit-DB
Summary
Internet Explorer in Microsoft Windows 7 SP1, Windows Server 2008 R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, and Internet Explorer and Microsoft Edge in Windows 10 Gold, 1511, 1607, 1703, 1709, and Windows Server 2016 allows remote code execution, due to how the scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2018-0834, CVE-2018-0835, CVE-2018-0836, CVE-2018-0837, CVE-2018-0838, CVE-2018-0856, CVE-2018-0857, CVE-2018-0858, CVE-2018-0859, CVE-2018-0860, CVE-2018-0861, and CVE-2018-0866.
Patch / fix
Timeline
- First public exploit (EDB-44077)
- Published
Exploit prediction
53.07% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- EDB-44077 Microsoft Edge Chakra JIT - ImplicitCallFlags Checks Bypass dos, 2018-02-15
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 | 9.3 | AV:N/AC:M/Au:N/C:C/I:C/A:C |
Affected products
- Microsoft Corporation Microsoft Edge, ChakraCore, Internet Explorer
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2018-0840
patch, vendor-advisory
-
exploit-db.com
/exploits/44077/
exploit, third-party-advisory, vdb-entry
-
securitytracker.com
/id/1040372
vdb-entry, third-party-advisory
-
securitytracker.com
/id/1040369
vdb-entry, third-party-advisory
-
securityfocus.com
/bid/102886
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2018-0840
- NVD CVE-2018-0840
Fencer Intel 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.