CVE-2016-7203
HighExploitedPublic exploitChakraCore RCE Vulnerability
Published May 14, 2022 · Updated Aug 6, 2024 · Also known as GHSA-wcvc-rhfj-997g
Key Facts
Patch immediately- CVE-2016-7203 is a high-severity vulnerability (CVSS 7.5 v3.1) affecting Edge (Microsoft), Microsoft.ChakraCore (nuget).
- It is exploited in the wild, listed in Industry KEV feed since Aug 17, 2021. Public exploit code is available.
- EPSS estimates a 65% probability of exploitation in the next 30 days.
- Fixed versions are available, including Microsoft.ChakraCore 1.2.2.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
7.5
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
65%
Higher than 99.2% of all scored CVEs
Exploited in the wild
Yes
1 catalog listing
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2016-7203 brief as a PDF
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Description
The Chakra JavaScript scripting engine in Microsoft Edge allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Scripting Engine Memory Corruption Vulnerability," a different vulnerability than CVE-2016-7200, CVE-2016-7201, CVE-2016-7202, CVE-2016-7208, CVE-2016-7240, CVE-2016-7242, and CVE-2016-7243.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Aug 17, 2021 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| EdgeMicrosoft | See advisory | n/a |
| Microsoft.ChakraCorenuget | See advisory | 1.2.2 |
Patched Releases
Microsoft.ChakraCore
1.2.2
Timeline
Added to Industry KEV feed
Aug 17, 2021
Publicly disclosed
May 14, 2022
Last updated
Aug 6, 2024
Weakness Type
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
- advisoryGHSA advisory
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2016-7203
- advisory40787
- exploitVulnCheck exploitation report
- articleMS16-129
FAQ
Common Questions.
The Chakra JavaScript scripting engine in Microsoft Edge allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Scripting Engine Memory Corruption Vulnerability," a different vulnerability than CVE-2016-7200, CVE-2016-7201, CVE-2016-7202, CVE-201…
Affected: Edge (Microsoft); Microsoft.ChakraCore (nuget). The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Aug 17, 2021.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Microsoft.ChakraCore 1.2.2.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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