How severe is CVE-2025-43963?

CVE-2025-43963 has a CVSS 3.x base score of 2.9, rated low severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2025-43963 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-43963?

CVE-2025-43963 affects Libraw. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-43963?

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

Does CVE-2025-43963 have an EU (EUVD) identifier?

Yes. CVE-2025-43963 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-11960.

When was CVE-2025-43963 published?

CVE-2025-43963 was published on 2025-04-21 and last updated on 2026-06-17.

CVE-2025-43963

CVE-2025-43963 is a low-severity vulnerability in Libraw with a CVSS 3.x base score of 2.9. 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-125.

Key facts

Severity: Low (CVSS 3.x base score 2.9)
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-11960
Weakness: CWE-125
Affected product: Libraw
Published: 2025-04-21
Last modified: 2026-06-17

Description

In LibRaw before 0.21.4, phase_one_correct in decoders/load_mfbacks.cpp allows out-of-buffer access because split_col and split_row values are not checked in 0x041f tag processing.

Frequently asked questions

What is CVE-2025-43963?: In LibRaw before 0.21.4, phase_one_correct in decoders/load_mfbacks.cpp allows out-of-buffer access because split_col and split_row values are not checked in 0x041f tag processing.
How severe is CVE-2025-43963?: CVE-2025-43963 has a CVSS 3.x base score of 2.9, rated low severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2025-43963 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-43963?: CVE-2025-43963 affects Libraw. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-43963?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-43963 have an EU (EUVD) identifier?: Yes. CVE-2025-43963 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-11960.
When was CVE-2025-43963 published?: CVE-2025-43963 was published on 2025-04-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:libraw:libraw:*:*:*:*:*:*:*:*

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