CVE-2021-3407

CVE-2021-3407 is a medium-severity vulnerability in Artifex Mupdf with a CVSS 3.x base score of 5.5. Its EPSS exploit-prediction score of 50% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-415.

Key facts

Description

A flaw was found in mupdf 1.18.0. Double free of object during linearization may lead to memory corruption and other potential consequences.

Frequently asked questions

What is CVE-2021-3407?
A flaw was found in mupdf 1.18.0. Double free of object during linearization may lead to memory corruption and other potential consequences.
How severe is CVE-2021-3407?
CVE-2021-3407 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-3407 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 50% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-3407?
CVE-2021-3407 primarily affects Artifex Mupdf. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-3407?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-3407 published?
CVE-2021-3407 was published on 2021-02-23 and last updated on 2026-06-17.

References

Affected products (5)

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