How severe is CVE-2021-45928?

CVE-2021-45928 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-45928 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-45928?

CVE-2021-45928 affects Libjxl Project Libjxl. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-45928?

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

When was CVE-2021-45928 published?

CVE-2021-45928 was published on 2022-01-01 and last updated on 2026-06-17.

CVE-2021-45928

CVE-2021-45928 is a medium-severity vulnerability in Libjxl Project Libjxl with a CVSS 3.x base score of 5.5. 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-787.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 2.1
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Libjxl Project Libjxl
Published: 2022-01-01
Last modified: 2026-06-17

Description

libjxl b02d6b9, as used in libvips 8.11 through 8.11.2 and other products, has an out-of-bounds write in jxl::ModularFrameDecoder::DecodeGroup (called from jxl::FrameDecoder::ProcessACGroup and jxl::ThreadPool::RunCallState<jxl::FrameDecoder::ProcessSections).

Frequently asked questions

What is CVE-2021-45928?: libjxl b02d6b9, as used in libvips 8.11 through 8.11.2 and other products, has an out-of-bounds write in jxl::ModularFrameDecoder::DecodeGroup (called from jxl::FrameDecoder::ProcessACGroup and jxl::ThreadPool::RunCallState<jxl::FrameDecoder::ProcessSections).
How severe is CVE-2021-45928?: CVE-2021-45928 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-45928 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-45928?: CVE-2021-45928 affects Libjxl Project Libjxl. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-45928?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-45928 published?: CVE-2021-45928 was published on 2022-01-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:libjxl_project:libjxl:*:*:*:*:*:*:*:*

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