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Fencer Vulns
high 7.1

CVE-2025-48379 json

Pillow Vulnerable to Write Buffer Overflow on BCn encoding

published 2025-07-01 16 mo ago modified 2026-09-10 1 mo ago also BIT-pillow-2025-48379 , EUVD-2025-19662 , GHSA-xg8h-j46f-w952 , PYSEC-2025-61

cvss
7.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 25%
public exploits
0
none known

Summary

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.

Patch / fix

  • pypi pillow 11.3.0
  • python pillow 11.3.0
  • python-Pillow openSUSE Tumbleweed 11.3.0-1.1

opensuse advisories openSUSE-SU-2025:15316-1

  • py3-pillow Alpine 3.24, Alpine 3.23 11.3.0-r0

alpine advisories ALPINE-CVE-2025-48379

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • python-pillow Arch Linux 11.3.0-1

arch linux advisories AVG-2906

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-48379 updated cvss 7.1

python-pillow: pillow: Pillow DDS Heap Buffer Overflow

  • Red Hat OpenShift Lightspeed openshift-lightspeed-tech-preview/lightspeed-rag-tool-rhel9 Red Hat AI Inference Server rhaiis/vllm-cuda-rhel9, rhaiis/vllm-rocm-rhel9
    affected: workaround, no fix available
  • Red Hat Enterprise Linux AI (RHEL AI) rhelai1/skills-adapter-v3, rhelai1/knowledge-adapter-v3, rhelai1/prometheus-8x7b-v2-0, rhelai1/modelcar-gemma-2-9b-it, rhelai1/mixtral-8x7b-instruct-v0-1, rhelai1/modelcar-gemma-2-9b-it-fp8, +9 more
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Enterprise Linux AI 1.5 rhelai1 1.5.3-1756724193, rhelai1 1.5.3-1756791365, rhelai1 1.5.3-1756791391, rhelai1 1.5.3-1756799326, rhelai1 1.5.3-1756800437, rhelai1 1.5.3-1756815221, +4 more
    fixed: vendor fix RHSA-2025:15839
  • Red Hat OpenShift Lightspeed openshift-lightspeed/lightspeed-service-api-rhel9 Red Hat Ansible Automation Platform 2 python-pillow, python3x-pillow, python3.11-pillow, ansible-automation-platform-24/de-minimal-rhel8, ansible-automation-platform-24/de-minimal-rhel9, ansible-automation-platform-25/de-minimal-rhel8, +8 more Red Hat Enterprise Linux 7 python-pillow, python-pillow-qt, python-pillow-tk, python-pillow-sane Red Hat Enterprise Linux 8 python-pillow, python3-pillow, python3-pillow-tk Red Hat Enterprise Linux AI (RHEL AI) rhelai1/granite-8b-lab-v1, rhelai1/granite-7b-starter, rhelai1/docling-serve-rhel9, rhelai1/granite-8b-code-base, rhelai1/granite-3.1-8b-lab-v1, rhelai1/granite-7b-redhat-lab, +9 more Red Hat Quay 3 quay/quay-rhel8
    +1 more products
    Red Hat Satellite 6 python-pillow
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
16 mo ago

Exploit prediction

0.33% chance of exploitation in the next 30 days, higher than 25% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/python-pillow/Pillow/pull/9041 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
GitHub 3.1 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
OSV 3.1 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Affected packages

ecosystem package affected fixed in
pypi pillow
>=11.2.0, <11.3.0
11.3.0
bitnami pillow
>=11.2.0
 no fix listed

Affected products

  • python-pillow Pillow

Classification

Weakness
  • CWE-122 Heap-based Buffer Overflow

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.