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CVE-2019-1429

Use After Free: Is CVE-2019-1429 real, exploitable, or a false positive? Here's the community verdict.

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signals

public sources

Exploited in wild
Yes
CISA KEV
Public exploit
Exploit-DB
Metasploit/EDB/PoC
Base severity
7.5 High
CVSS
Exploitation prob.
73%
FIRST EPSS
Weakness
CWE-416 · Use After Free
CWE

Confirmed exploited in the wild. Patch this first, regardless of the base score.

public exploits

links to sources — we don’t host code
Exploit-DB

A 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 →
Affected:Microsoft

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

NVD MITRE CVE.org CISA KEV

Published

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Community ground truth

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In your experience, is this finding real and exploitable?

awaiting field verdicts
Real, but not a risk here
Not a real issue

Curated 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
    Field note · TruePositive EditorialCurated

    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
    Remediation · TruePositive EditorialCurated

    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.

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Related CVEs

Same weakness: CWE-416 · Use After Free.