CVE-2024-30161Network attack vector

Data exposure and modification via dangling header pointer

Published Mar 24, 2024 · Updated Mar 14, 2025

Use after free in Qt for WebAssembly 6.5.4, 6.5.5, and 6.6.2 allows remote attackers to read or alter data via HTTP replies. The WebAssembly QNetworkReply implementation accesses header data after its backing storage has expired, dereferencing a dangling pointer. The affected code must process an attacker-influenced network reply in a WebAssembly application; published evidence supports data disclosure or modification, not service interruption.

CVSS severity6.5
Medium
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use after free in Qt for WebAssembly 6.5.4, 6.5.5, and 6.6.2 allows remote attackers to read or alter data via HTTP replies. The WebAssembly QNetworkReply implementation accesses header data after its backing storage has expired, dereferencing a dangling pointer. The affected code must process an attacker-influenced network reply in a WebAssembly application; published evidence supports data disclosure or modification, not service interruption.

The record

CVE
CVE-2024-30161
Published
Mar 24, 2024
Updated
Mar 14, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-416
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 24, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 14, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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