Use After Free in Microsoft Internet Explorer
CVE-2019-1429
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'. This CVE ID is unique from CVE-2019-1426, CVE-2019-1427, CVE-2019-1428.
Vulnerability class: Use-After-Free
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: 0.773 (99.6th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.773 · newest: 0.773 · change: 0.000
Affected products
- Microsoft Internet Explorer — versions 9, 10, 11
- Microsoft Internet Explorer 10 — versions Windows Server 2012
- 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 Internet Explorer 9 — versions Windows Server 2008 for 32-bit Systems Service Pack 2, Windows Server 2008 for x64-based Systems Service Pack 2
- Microsoft Windows 10 1507
- Microsoft Windows 10 1607
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1429 (Patch, Vendor Advisory)
- packetstormsecurity.com/files/155433/Microsoft-Internet-Explorer-Use-After-Free… (Exploit, VDB Entry, Third Party Advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2019-1429?
- CVE-2019-1429 is a high-severity vulnerability in Microsoft Internet Explorer, classified under Use After Free. CVSS score: 7.5/10. Published 2019-11-12.
- How severe is CVE-2019-1429?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2019-1429 known to be exploited?
- Yes. CVE-2019-1429 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 3 public proof-of-concept repositories are indexed.