Buffer overflow in Microsoft Chakracore
CVE-2018-0858
ChakraCore allows remote code execution, due to how the ChakraCore 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-2018-0840, CVE-2018-0856, CVE-2018-0857, CVE-2018-0859, CVE-2018-0860, CVE-2018-0861, and CVE-2018-0866.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.148 (96.6th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 96.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.148 · newest: 0.148 · change: 0.000
Affected products
- Microsoft Chakracore
- Microsoft Corporation Chakracore — versions ChakraCore
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/102865 (VDB Entry, Third Party Advisory, vdb-entry)
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0858 (Vendor Advisory)
- www.securitytracker.com/id/1040372 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2018-0858?
- CVE-2018-0858 is a high-severity vulnerability in Microsoft Chakracore, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2018-02-15.
- How severe is CVE-2018-0858?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2018-0858 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.