How severe is CVE-2018-18443?

CVE-2018-18443 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2018-18443 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-18443?

CVE-2018-18443 affects Ilm Openexr. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-18443?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-18443 published?

CVE-2018-18443 was published on 2018-10-17 and last updated on 2026-06-17.

CVE-2018-18443

CVE-2018-18443 is a medium-severity vulnerability in Ilm Openexr with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-772.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.3
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-772
Affected product: Ilm Openexr
Published: 2018-10-17
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2018-18443?: OpenEXR 2.3.0 has a memory leak in ThreadPool in IlmBase/IlmThread/IlmThreadPool.cpp, as demonstrated by exrmultiview.
How severe is CVE-2018-18443?: CVE-2018-18443 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2018-18443 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-18443?: CVE-2018-18443 affects Ilm Openexr. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-18443?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-18443 published?: CVE-2018-18443 was published on 2018-10-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ilm:openexr:2.3.0:*:*:*:*:*:*:*

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CVE-2018-18444 — High (CVSS 8.8): makeMultiView.cpp in exrmultiview in OpenEXR 2.3.0 has an out-of-bounds write, leading to an assertion failure or…

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CVE-2020-14339 — High (CVSS 8.8): A flaw was found in libvirt, where it leaked a file descriptor for `/dev/mapper/control` into the QEMU process. This…
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