CVE-2024-53319Network attack vector

Process crash via oversized XML escape copy

Published Jan 31, 2025 · Updated Feb 3, 2025

Heap buffer overflow in Qualisys C++ SDK commit a32a21a allows remote attackers to crash processes via crafted XML text escaping. CMarkup::x_TextToDoc passes strncpy the total destination-buffer size instead of the remaining capacity when copying an escape sequence, causing an out-of-bounds heap write. Reachability requires a consuming application to pass attacker-controlled text containing special XML characters into the affected SDK path; the published assessment establishes a process crash, not code execution.

CVSS severity7.5
High
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in Qualisys C++ SDK commit a32a21a allows remote attackers to crash processes via crafted XML text escaping. CMarkup::x_TextToDoc passes strncpy the total destination-buffer size instead of the remaining capacity when copying an escape sequence, causing an out-of-bounds heap write. Reachability requires a consuming application to pass attacker-controlled text containing special XML characters into the affected SDK path; the published assessment establishes a process crash, not code execution.

The record

CVE
CVE-2024-53319
Published
Jan 31, 2025
Updated
Feb 3, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 31, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 3, 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

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

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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-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1499.004Application or System Exploitation

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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