Buffer overflow in Microsoft Internet Explorer
CVE-2019-1221
A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer, aka 'Scripting Engine Memory Corruption Vulnerability'.
Vulnerability class: Buffer Overflow
EPSS: 0.191 (97.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Microsoft Internet_explorer — versions 11
- Microsoft Internet Explorer 11 — versions Windows 7 for 32-bit Systems Service Pack 1, Windows 7 for x64-based Systems Service Pack 1, Windows Server 2008 R2 for x64-based Systems Service Pack 1
- Microsoft Internet Explorer 11 On Windows 10 Version 1903 For 32-bit Systems — versions unspecified
- Microsoft Internet Explorer 11 On Windows 10 Version 1903 For Arm64-based Systems — versions unspecified
- Microsoft Internet Explorer 11 On Windows 10 Version 1903 For X64-based Systems — versions unspecified
- Microsoft Internet Explorer 11 On Windows Server 2012 — versions unspecified
- Microsoft Windows_10 — versions 1607, 1703, 1709
- Microsoft Windows_7
- Microsoft Windows_8.1
- Microsoft Windows_rt_8.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secure@microsoft.com (Patch, x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2019-1221?
- CVE-2019-1221 is a high-severity vulnerability in Microsoft Internet Explorer, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2019-09-11.
- How severe is CVE-2019-1221?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2019-1221 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.