CVE-2018-18443

OpenEXR 2.3.0 has a memory leak in ThreadPool in IlmBase/IlmThread/IlmThreadPool.cpp, as...

4.3 MediumFix available

OpenEXR 2.3.0 has a memory leak in ThreadPool in IlmBase/IlmThread/IlmThreadPool.cpp, as demonstrated by exrmultiview.

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: None
Integrity: None
Availability: Low

Exploit likelihood

2.11%Up 1.1 points since Apr 14, 2021

What each source reports

NVD Score used 4.3

OpenEXR 2.3.0 has a memory leak in ThreadPool in IlmBase/IlmThread/IlmThreadPool.cpp, as demonstrated by exrmultiview.

Record: CVE-2018-18443
CVSS 3.0: 4.3 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:N/A:P
Weakness: CWE-772
Updated: 2026-11-02

CVE List No score

OpenEXR 2.3.0 has a memory leak in ThreadPool in IlmBase/IlmThread/IlmThreadPool.cpp, as demonstrated by exrmultiview.

Record: CVE-2018-18443
Updated: 2026-11-02

EUVDEUVD-2018-10171 No score

OpenEXR 2.3.0 has a memory leak in ThreadPool in IlmBase/IlmThread/IlmThreadPool.cpp, as demonstrated by exrmultiview.

Record: EUVD-2018-10171
Updated: 2026-11-03

GitHub AdvisoriesGHSA-pfc3-fmmp-mxgw 4.3

OpenEXR 2.3.0 has a memory leak in ThreadPool in IlmBase/IlmThread/IlmThreadPool.cpp, as...

OpenEXR 2.3.0 has a memory leak in ThreadPool in IlmBase/IlmThread/IlmThreadPool.cpp, as demonstrated by exrmultiview.

Record: GHSA-pfc3-fmmp-mxgw
CVSS 3.0: 4.3 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Weakness: CWE-772
Updated: 2026-11-02

OSVAZL-44604 4.3

CVE-2018-18443 affecting package ilmbase 2.3.0-5

OpenEXR 2.3.0 has a memory leak in ThreadPool in IlmBase/IlmThread/IlmThreadPool.cpp, as demonstrated by exrmultiview.

Record: AZL-44604
CVSS 3.0: 4.3 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Updated: 2026-11-05

OSV 4.3

OpenEXR 2.3.0 has a memory leak in ThreadPool in IlmBase/IlmThread/IlmThreadPool.cpp, as demonstrated by exrmultiview.

Record: CVE-2018-18443
CVSS 3.0: 4.3 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Updated: 2026-11-02

OSVDEBIAN-CVE-2018-18443 4.3

OpenEXR 2.3.0 has a memory leak in ThreadPool in IlmBase/IlmThread/IlmThreadPool.cpp, as demonstrated by exrmultiview.

Record: DEBIAN-CVE-2018-18443
CVSS 3.0: 4.3 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Updated: 2026-11-02

OSVMGASA-2020-0114 No score

Updated ilmbase packages fix security vulnerability

The updated packages fix a security vulnerability:

OpenEXR 2.3.0 has a memory leak in ThreadPool in IlmBase/IlmThread/ IlmThreadPool.cpp, as demonstrated by exrmultiview. (CVE-2018-18443)

Record: MGASA-2020-0114
Updated: 2026-11-02

OSVopenSUSE-SU-2024:11117-1 No score

libIex-3_1-30-3.1.1-2.2 on GA media

These are all security issues fixed in the libIex-3_1-30-3.1.1-2.2 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2024:11117-1
Updated: 2026-11-02

Affected products

ilm openexr

Affected packages

Affected packages
Package	Affected	Fixed
`ilmbase` Azure Linux:3	through 2.3.0-5	None known
`openexr` Debian:12	before 2.5.3-2	2.5.3-2
`openexr` Debian:13	before 2.5.3-2	2.5.3-2
`openexr` Debian:14	before 2.5.3-2	2.5.3-2
`ilmbase` Mageia:7	before 2.3.0-1.1.mga7	2.3.0-1.1.mga7
`openexr` openSUSE:Tumbleweed	before 3.1.1-2.2	3.1.1-2.2

History

History
Recorded	Changed	Sources
Nov 5, 2026	facts	OSV
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2018-18443 is a medium vulnerability (CVSS 4.3) in Ilm Openexr, published October 17, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.11%, the 81st percentile. Fixed in openexr 2.5.3-2.

References

Show 15 moreShow less