CVE-2019-5063Public exploitNetwork attack vector

Code execution via unchecked XML entity copy

Published Jan 3, 2020 · Updated Aug 4, 2024

Heap buffer overflow in OpenCV 4.1.0 XML persistence parsing allows attackers to execute code through a crafted XML file. In persistence_xml.cpp, XMLParser copies an unrecognized entity and its delimiters into the fixed-size strbuf without checking the remaining capacity. Exploitation requires an application to process attacker-supplied XML; the demonstrated result is heap corruption and a process crash, with code execution possible.

CVSS severity8.8
High
EPSS probability21.11%
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 OpenCV 4.1.0 XML persistence parsing allows attackers to execute code through a crafted XML file. In persistence_xml.cpp, XMLParser copies an unrecognized entity and its delimiters into the fixed-size strbuf without checking the remaining capacity. Exploitation requires an application to process attacker-supplied XML; the demonstrated result is heap corruption and a process crash, with code execution possible.

The record

CVE
CVE-2019-5063
Published
Jan 3, 2020
Updated
Aug 4, 2024
Vendor
OpenCV
Product
OpenCV
Classifications
CWE-120, CWE-787, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 3, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=OpenCV 4.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenCV · OpenCVversion=OpenCV 4.1.0

Published CVSS scores

8.8GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8Cisco TalosCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/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 exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE-787Out-of-bounds Write
T1204.002Malicious File

Public exploit references

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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