CVE-2019-1429
Use After Free: Is CVE-2019-1429 real, exploitable, or a false positive? Here's the community verdict.
Community verdict: No field verdicts yet. Be the first practitioner to weigh in.
signals
public sources
Confirmed exploited in the wild. Patch this first, regardless of the base score.
cisa ssvc
CISA Vulnrichment · assessed
CISA decision, by how critical the affected system is to you:
- low impact → Track
- medium impact → Attend
- high impact → Act
Track: normal patch cycle · Track*: watch closely · Attend: patch sooner · Act: patch now. About SSVC ↗
public exploits
links to sources — we don’t host codeA working exploit is publicly available from a maintained source. Treat this as higher urgency and verify your exposure.
baseline read
auto · not a community verdict
Real — exploited in the wild
CISA confirms active exploitation. Treat scanner hits as true positives unless your specific version or config is unaffected.
Based on CISA KEV
Confirm or dispute →CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
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.
References
Published · Added to CISA KEV (722 days after publication)
Embed this verdict
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timeline
- CISA SSVC assessment · exploitation: active
- Added to CISA KEV · confirmed exploited in the wild
- Published by NVD
- Added to VulnCheck KEV · reported exploited in the wild
Score and exploit changes tracked since .
Community ground truth
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In your experience, is this finding real and exploitable?
awaiting field verdictsCurated baseline: TruePositive's read from public sources is Real & exploitable — a starting point, not a community verdict.
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Field notes & remediation
Verdicts are the quick signal. Notes are the evidence and fixes behind them.
- 0
This is a memory corruption bug in the Internet Explorer scripting engine that a crafted web page can trigger, giving code execution as the current user. It is a classic drive-by, and it is in the CISA KEV catalog, so it is confirmed exploited in the wild. The attack needs the user to visit a malicious or compromised page and the attack complexity is high, but reliable exploitation was shown, so treat it as real.
Who is affected: systems still using Internet Explorer 9, 10, or 11 unpatched. The Chromium-based Edge is not affected.
Triage nuance: on a well-managed fleet where IE is disabled by policy and cannot be launched, a scanner may still flag hosts purely on patch level even though the vulnerable path is not reachable. Confirm whether IE is actually disabled and unreachable before treating the flag as urgent.
Commonly flagged by: Nessus, Qualys, Microsoft Defender.
- 0
Apply the November 2019 cumulative or IE security update (covers IE 9, 10, and 11). Where IE is not needed, disable it by policy and remove it from the default launch path. Patch first, since disabling IE is defense in depth, not a substitute for the fix.
Add a field note or remediationoptional
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