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CVE-2019-5063

Out-of-bounds Write in OpenCV

8.8 HighFix available

An exploitable heap buffer overflow vulnerability exists in the data structure persistence functionality of OpenCV 4.1.0. A specially crafted XML file can cause a buffer overflow, resulting in multiple heap corruptions and potential code execution. An attacker can provide a specially crafted file to trigger this vulnerability.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

21.1%Up 20.4 points since Apr 14, 2021
90%50%10%1%

What each source reports

CVE List Score used 8.8

An exploitable heap buffer overflow vulnerability exists in the data structure persistence functionality of OpenCV 4.1.0. A specially crafted XML file can cause a buffer overflow, resulting in multiple heap corruptions and potential code execution. An attacker can provide a specially crafted file to trigger this vulnerability.

Record
CVE-2019-5063
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-120
Updated
2026-11-02
EUVDEUVD-2021-2226 8.8

An exploitable heap buffer overflow vulnerability exists in the data structure persistence functionality of OpenCV 4.1.0. A specially crafted XML file can cause a buffer overflow, resulting in multiple heap corruptions and potential code execution. An attacker can provide a specially crafted file to trigger this vulnerability.

Record
EUVD-2021-2226
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-03
GitHub AdvisoriesGHSA-m6vm-8g8v-xfjh 8.8

Out-of-bounds Write in OpenCV

An exploitable heap buffer overflow vulnerability exists in the data structure persistence functionality of OpenCV 4.1.0 (corresponds with OpenCV-Python 4.1.0.25). A specially crafted XML file can cause a buffer overflow, resulting in multiple heap corruptions and potential code execution. An attacker can provide a specially crafted file to trigger this vulnerability.

Record
GHSA-m6vm-8g8v-xfjh
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-787
Updated
2026-11-02
NVD 8.8

An exploitable heap buffer overflow vulnerability exists in the data structure persistence functionality of OpenCV 4.1.0. A specially crafted XML file can cause a buffer overflow, resulting in multiple heap corruptions and potential code execution. An attacker can provide a specially crafted file to trigger this vulnerability.

Record
CVE-2019-5063
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0
6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness
CWE-120, CWE-787
Updated
2026-11-02
OSV 8.8

An exploitable heap buffer overflow vulnerability exists in the data structure persistence functionality of OpenCV 4.1.0. A specially crafted XML file can cause a buffer overflow, resulting in multiple heap corruptions and potential code execution. An attacker can provide a specially crafted file to trigger this vulnerability.

Record
CVE-2019-5063
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2019-5063 8.8

An exploitable heap buffer overflow vulnerability exists in the data structure persistence functionality of OpenCV 4.1.0. A specially crafted XML file can cause a buffer overflow, resulting in multiple heap corruptions and potential code execution. An attacker can provide a specially crafted file to trigger this vulnerability.

Record
DEBIAN-CVE-2019-5063
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
Show 6 moreShow less
OSVGHSA-m6vm-8g8v-xfjh 8.8

Out-of-bounds Write in OpenCV

An exploitable heap buffer overflow vulnerability exists in the data structure persistence functionality of OpenCV 4.1.0 (corresponds with OpenCV-Python 4.1.0.25). A specially crafted XML file can cause a buffer overflow, resulting in multiple heap corruptions and potential code execution. An attacker can provide a specially crafted file to trigger this vulnerability.

Record
GHSA-m6vm-8g8v-xfjh
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-787
Updated
2026-11-02
OSVPYSEC-2026-2801 8.8

Out-of-bounds Write in OpenCV

An exploitable heap buffer overflow vulnerability exists in the data structure persistence functionality of OpenCV 4.1.0 (corresponds with OpenCV-Python 4.1.0.25). A specially crafted XML file can cause a buffer overflow, resulting in multiple heap corruptions and potential code execution. An attacker can provide a specially crafted file to trigger this vulnerability.

Record
PYSEC-2026-2801
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVPYSEC-2026-2826 8.8

Out-of-bounds Write in OpenCV

An exploitable heap buffer overflow vulnerability exists in the data structure persistence functionality of OpenCV 4.1.0 (corresponds with OpenCV-Python 4.1.0.25). A specially crafted XML file can cause a buffer overflow, resulting in multiple heap corruptions and potential code execution. An attacker can provide a specially crafted file to trigger this vulnerability.

Record
PYSEC-2026-2826
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVPYSEC-2026-2840 8.8

Out-of-bounds Write in OpenCV

An exploitable heap buffer overflow vulnerability exists in the data structure persistence functionality of OpenCV 4.1.0 (corresponds with OpenCV-Python 4.1.0.25). A specially crafted XML file can cause a buffer overflow, resulting in multiple heap corruptions and potential code execution. An attacker can provide a specially crafted file to trigger this vulnerability.

Record
PYSEC-2026-2840
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVPYSEC-2026-724 8.8

Out-of-bounds Write in OpenCV

An exploitable heap buffer overflow vulnerability exists in the data structure persistence functionality of OpenCV 4.1.0 (corresponds with OpenCV-Python 4.1.0.25). A specially crafted XML file can cause a buffer overflow, resulting in multiple heap corruptions and potential code execution. An attacker can provide a specially crafted file to trigger this vulnerability.

Record
PYSEC-2026-724
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2019-5063 8.8

An exploitable heap buffer overflow vulnerability exists in the data structure persistence functionality of OpenCV 4.1.0. A specially crafted XML file can cause a buffer overflow, resulting in multiple heap corruptions and potential code execution. An attacker can provide a specially crafted file to trigger this vulnerability.

Record
UBUNTU-CVE-2019-5063
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
opencv-python
PyPI
 through 4.1.0.25 None known
opencv-python-headless
PyPI
 through 4.1.0.25 None known
opencv-contrib-python
PyPI
 through 4.1.0.25 None known
opencv-contrib-python-headless
PyPI
 through 4.1.0.25 None known
opencv
Debian:12
 before 4.2.0+dfsg-3
4.2.0+dfsg-3
opencv
Debian:13
 before 4.2.0+dfsg-3
4.2.0+dfsg-3
opencv
Debian:14
 before 4.2.0+dfsg-3
4.2.0+dfsg-3
opencv-python
PyPI
 through 4.1.0.25, plus listed versions
3.4.0.143.4.1.153.4.10.353.4.10.373.4.11.39
Show 24 moreShow less
3.4.11.413.4.11.433.4.11.453.4.13.473.4.14.513.4.14.533.4.15.553.4.16.573.4.16.593.4.17.613.4.17.633.4.18.653.4.2.173.4.3.183.4.4.193.4.5.203.4.6.273.4.7.283.4.8.293.4.9.313.4.9.334.0.0.214.0.1.234.0.1.24
 None known
opencv-python-headless
PyPI
 through 4.1.0.25, plus listed versions
3.4.10.373.4.11.393.4.11.413.4.11.433.4.11.45
Show 18 moreShow less
3.4.13.473.4.14.513.4.14.533.4.15.553.4.16.573.4.16.593.4.17.613.4.17.633.4.18.653.4.3.183.4.4.193.4.5.203.4.6.273.4.7.283.4.8.293.4.9.334.0.0.214.0.1.24
 None known
opencv-contrib-python
PyPI
 through 4.1.0.25, plus listed versions
3.4.10.353.4.10.373.4.11.393.4.11.413.4.11.43
Show 22 moreShow less
3.4.11.453.4.13.473.4.14.513.4.14.533.4.15.553.4.16.573.4.16.593.4.17.613.4.17.633.4.18.653.4.2.173.4.3.183.4.4.193.4.5.203.4.6.273.4.7.283.4.8.293.4.9.313.4.9.334.0.0.214.0.1.234.0.1.24
 None known
opencv-contrib-python-headless
PyPI
 through 4.1.0.25, plus listed versions
3.4.0.143.4.10.373.4.11.413.4.11.433.4.11.45
Show 20 moreShow less
3.4.13.473.4.14.513.4.14.533.4.15.553.4.16.573.4.16.593.4.17.613.4.17.633.4.18.653.4.2.173.4.3.183.4.4.193.4.5.203.4.6.273.4.7.283.4.8.293.4.9.334.0.0.214.0.1.234.0.1.24
 None known
opencv-python
PyPI
 through 4.1.0.25, plus listed versions
3.4.0.143.4.1.153.4.10.353.4.10.373.4.11.39
Show 25 moreShow less
3.4.11.413.4.11.433.4.11.453.4.13.473.4.14.513.4.14.533.4.15.553.4.16.573.4.16.593.4.17.613.4.17.633.4.18.653.4.2.163.4.2.173.4.3.183.4.4.193.4.5.203.4.6.273.4.7.283.4.8.293.4.9.313.4.9.334.0.0.214.0.1.234.0.1.24
 None known
opencv-contrib-python-headless
PyPI
 through 4.1.0.25, plus listed versions
3.4.0.143.4.1.153.4.10.373.4.11.393.4.11.41
Show 22 moreShow less
3.4.11.433.4.11.453.4.13.473.4.14.513.4.14.533.4.15.553.4.16.573.4.16.593.4.17.613.4.17.633.4.18.653.4.2.173.4.3.183.4.4.193.4.5.203.4.6.273.4.7.283.4.8.293.4.9.334.0.0.214.0.1.234.0.1.24
 None known

History

History
RecordedChangedSources
affected
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2019-5063 is a high vulnerability (CVSS 8.8) in Opencv, published January 3, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 21.1%, the 97th percentile. Fixed in opencv 4.2.0+dfsg-3.

References

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