CVE-2018-0946: microsoft chakracore Use After Free
Vulnerability summary
CVE-2018-0946 is a high (CVSS 7.6) Use After Free vulnerability in microsoft chakracore. EPSS estimates a 51.13% chance of exploitation in the next 30 days, higher than 98.9% of scored vulnerabilities. 1 public exploit is recorded.
Timeline
- 09-05-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Microsoft Edge, aka "Scripting Engine Memory Corruption Vulnerability." This affects Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2018-0945, CVE-2018-0951, CVE-2018-0953, CVE-2018-0954, CVE-2018-0955, CVE-2018-1022, CVE-2018-8114, CVE-2018-8122, CVE-2018-8128, CVE-2018-8137, CVE-2018-8139.
CVSS metrics
3 scores · 2 sources · 2 versions- OSV · NugetEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
51.13%
Chance of exploitation in the next 30 days
Percentile
99%
Versus all other CVEs
30-day change
-0.64 pp
From 51.77% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundMicrosoft Edge Chakra - Cross Context Use-After-Free
Maturity: poc
Weaknesses
CWE · root cause- CWE-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Microsoft3 products
- chakracoreChakraCore | ≤ 1.8.3
- edgena
- microsoft edgeWindows 10 Version 1703 for 32-bit Systems | Windows 10 Version 1703 for x64-based Systems | Windows 10 Version 1709 for 32-bit Systems | Windows 10 Version 1709 for x64-based Systems | Windows 10 Version 1803 for 32-bit Systems | Windows 10 Version 1803 for x64-based Systems
NuGet1 product
- Microsoft.ChakraCore< 1.8.4
2 vendors · 4 products
References
10 links
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0946X Refsource CONFIRMPatchVendor AdvisoryWEB