How severe is CVE-2025-48379?

CVE-2025-48379 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2025-48379 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-48379?

CVE-2025-48379 affects Python Pillow. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-48379?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-48379 have an EU (EUVD) identifier?

Yes. CVE-2025-48379 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19662.

When was CVE-2025-48379 published?

CVE-2025-48379 was published on 2025-07-01 and last updated on 2026-06-17.

CVE-2025-48379

CVE-2025-48379 is a high-severity vulnerability in Python Pillow with a CVSS 3.x base score of 7.1. 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: High (CVSS 3.x base score 7.1)
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-19662
Weakness: CWE-122
Affected product: Python Pillow
Published: 2025-07-01
Last modified: 2026-06-17

Description

Pillow is a Python imaging library. In versions 11.2.0 to before 11.3.0, there is a heap buffer overflow when writing a sufficiently large (>64k encoded with default settings) image in the DDS format due to writing into a buffer without checking for available space. This only affects users who save untrusted data as a compressed DDS image. This issue has been patched in version 11.3.0.

Frequently asked questions

What is CVE-2025-48379?: Pillow is a Python imaging library. In versions 11.2.0 to before 11.3.0, there is a heap buffer overflow when writing a sufficiently large (>64k encoded with default settings) image in the DDS format due to writing into a buffer without checking for available space. This only affects users who save untrusted data as a compressed DDS image. This issue has been patched in version 11.3.0.
How severe is CVE-2025-48379?: CVE-2025-48379 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2025-48379 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-48379?: CVE-2025-48379 affects Python Pillow. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-48379?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-48379 have an EU (EUVD) identifier?: Yes. CVE-2025-48379 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19662.
When was CVE-2025-48379 published?: CVE-2025-48379 was published on 2025-07-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:python:pillow:11.2.1:*:*:*:*:*:*:*

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