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High severity7.5NVD Advisory· Published Mar 19, 2021· Updated Jun 17, 2026

CVE-2021-25291

CVE-2021-25291

Description

An issue was discovered in Pillow before 8.1.1. In TiffDecode.c, there is an out-of-bounds read in TiffreadRGBATile via invalid tile boundaries.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
pillowPyPI	< 8.2.0	8.2.0

Affected products

6

Pillow/Pillowdescription
osv-coords5 versions
pkg:bitnami/pillow pkg:pypi/pillow pkg:rpm/opensuse/python-CairoSVG&distro=openSUSE%20Leap%2015.2 pkg:rpm/opensuse/python-Pillow&distro=openSUSE%20Leap%2015.2 pkg:rpm/opensuse/python-Pillow&distro=openSUSE%20Tumbleweed
< 8.1.1+ 4 more
- (no CPE)range: < 8.1.1
- (no CPE)range: < 8.2.0
- (no CPE)range: < 2.5.1-lp152.2.3.1
- (no CPE)range: < 8.3.1-lp152.5.3.1
- (no CPE)range: < 8.3.2-1.2

Patches

Vulnerability mechanics

References

7

github.com/advisories/GHSA-mvg9-xffr-p774ghsaADVISORY
nvd.nist.gov/vuln/detail/CVE-2021-25291ghsaADVISORY
pillow.readthedocs.io/en/stable/releasenotes/8.1.1.htmlnvdRelease NotesVendor AdvisoryWEB
security.gentoo.org/glsa/202107-33nvdThird Party AdvisoryWEB
github.com/pypa/advisory-database/tree/main/vulns/pillow/PYSEC-2021-37.yamlghsaWEB
github.com/python-pillow/Pillow/commit/8b8076bdcb3815be0ef0d279651d8d1342b8ea61ghsaWEB
github.com/python-pillow/Pillow/commit/cbdce6c5d054fccaf4af34b47f212355c64ace7aghsaWEB

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