How severe is CVE-2025-3512?

CVE-2025-3512 has a CVSS 4.0 base score of 4.8, rated medium severity.

Is CVE-2025-3512 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-3512?

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

Does CVE-2025-3512 have an EU (EUVD) identifier?

Yes. CVE-2025-3512 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-10735.

When was CVE-2025-3512 published?

CVE-2025-3512 was published on 2025-04-11 and last updated on 2026-06-17.

CVE-2025-3512

CVE-2025-3512 is a medium-severity vulnerability with a CVSS 4.0 base score of 4.8. 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-122.

Key facts

Severity: Medium (CVSS 4.0 base score 4.8)
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-10735
Weakness: CWE-122
Published: 2025-04-11
Last modified: 2026-06-17

Description

There is a Heap-based Buffer Overflow vulnerability in QTextMarkdownImporter. This requires an incorrectly formatted markdown file to be passed to QTextMarkdownImporter to trigger the overflow.This issue affects Qt from 6.8.0 to 6.8.4. Versions up to 6.6.0 are known to be unaffected, and the fix is in 6.8.4 and later.

Frequently asked questions

What is CVE-2025-3512?: There is a Heap-based Buffer Overflow vulnerability in QTextMarkdownImporter. This requires an incorrectly formatted markdown file to be passed to QTextMarkdownImporter to trigger the overflow.This issue affects Qt from 6.8.0 to 6.8.4. Versions up to 6.6.0 are known to be unaffected, and the fix is in 6.8.4 and later.
How severe is CVE-2025-3512?: CVE-2025-3512 has a CVSS 4.0 base score of 4.8, rated medium severity.
Is CVE-2025-3512 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-3512?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-3512 have an EU (EUVD) identifier?: Yes. CVE-2025-3512 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-10735.
When was CVE-2025-3512 published?: CVE-2025-3512 was published on 2025-04-11 and last updated on 2026-06-17.

References

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