CVE-2021-25291

mediumpriority · track · 30EPSS 0.014 · 72 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.40% (72nd) EPSS

CVSS 5 · medium

Is it mine?

5 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · osv · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-125USprimaryCWE-125US

affected products (5)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
python pillow< 8.1.1nvdUScpe:2.3:a:python:pillow:*:*:*:*:*:*:*:*
Bitnami pillow< 8.1.1osvUSpkg:bitnami/pillow
PyPI pillow< 8.1.1osvUSpkg:pypi/pillow
PyPI pillow< 8.2.0osvUSpkg:pypi/pillow

advisories (3)

Vendor and ecosystem advisories describing this.

GHSA-mvg9-xffr-p774Out of bounds read in Pillow2021-03-29ghsa · osvUS
An issue was discovered in Pillow before 8.2.0. In `TiffDecode.c`, there is an out-of-bounds read in `TiffreadRGBATile` via invalid tile boundaries.
BIT-pillow-2021-252912024-03-06vendor · osvUS
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.
PYSEC-2021-372021-03-19vendor · osvUS
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.

also known as (7)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv nvd NVD CVE.org MITRE

published 2021-03-19modified 2026-06-17

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+11867 more

references (13)

External citations — patches, advisories, analysis.

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