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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.193 (97.3th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.191 · newest: 0.193 · change: +0.001
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
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1221 (Patch, 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.