CVE-2021-25290 json
Out-of-bounds Write in Pillow
published 2021-03-19 5 y ago modified 2026-09-08 2 mo ago also BIT-pillow-2021-25290 , EUVD-2021-0173 , GHSA-8xjq-8fcg-g5hw , PYSEC-2021-36
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.4%
- EPSS 2.4% chance of exploitation in 30 days, percentile 83%
- public exploits
- 0
- none known
Summary
An issue was discovered in Pillow before 8.1.1. In TiffDecode.c, there is a negative-offset memcpy with an invalid size.
Patch / fix
- pypi pillow 8.1.1
- bitnami pillow 8.1.1
- python pillow 8.1.1
- pillow Debian 14, Debian 13, Debian 12 8.1.1-1
debian advisories DEBIAN-CVE-2021-25290
- pillow Ubuntu 16.04 LTS 3.1.2-0ubuntu1.6
- pillow Ubuntu 18.04 LTS 5.1.0-1ubuntu0.5
- pillow Ubuntu 20.04 LTS 7.0.0-4ubuntu0.3
- pillow Ubuntu Pro 14.04 LTS 2.3.0-1ubuntu3.4+esm5
ubuntu advisories UBUNTU-CVE-2021-25290
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- python-pillow RHEL 8 5.1.1-16.el8
- python3-pillow RHEL 8 5.1.1-16.el8
red hat advisories RHSA-2021:4149
- python-Pillow SLE Module for Package Hub 15 SP6, openSUSE Leap 15.5 7.2.0-150300.3.15.1
- python-Pillow OpenStack Cloud 7 2.8.1-4.22.1
- python-Pillow OpenStack Cloud Crowbar 8, OpenStack Cloud 8, HPE Helion OpenStack 8 4.2.1-3.14.1
- python-Pillow OpenStack Cloud Crowbar 9, OpenStack Cloud 9 5.2.0-3.8.1
suse advisories SUSE-SU-2024:1673-2SUSE-SU-2024:1673-1SUSE-SU-2021:1940-1SUSE-SU-2021:1939-1SUSE-SU-2021:1938-1
- python-Pillow openSUSE Tumbleweed 12.3.0-1.1
- python-Pillow openSUSE Tumbleweed 8.3.2-1.2
- python-Pillow openSUSE Tumbleweed 10.3.0-1.1
- python-Pillow openSUSE Leap 15.2 8.3.1-lp152.5.3.1
- python-CairoSVG openSUSE Leap 15.2 2.5.1-lp152.2.3.1
opensuse advisories openSUSE-SU-2026:11261-1openSUSE-SU-2024:11209-1openSUSE-SU-2024:13827-1openSUSE-SU-2021:1134-1
- python3-pillow AlmaLinux 8 5.1.1-16.el8
almalinux advisories ALSA-2021:4149
- python-pillow Rocky Linux 8 5.1.1-16.el8
rocky linux advisories RLSA-2021:4149
- py3-pillow Alpine 3.24, Alpine 3.23, Alpine 3.22 +8 more 8.1.2-r0
alpine advisories ALPINE-CVE-2021-25290
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 8.1.2-1
arch linux advisories AVG-1635
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-2021-25290 updated cvss 7.5
python-pillow: Negative-offset memcpy in TIFF image reader
-
Red Hat Enterprise Linux 7 python-pillow, python-pillow-qt, python-pillow-tk, python-pillow-saneaffected: workaround, no fix planned “Disable the invoice generation feature to mitigate this vulnerability in Red Hat Quay.”
-
Red Hat Enterprise Linux 9 python-pillowaffected: workaround, no fix available “Disable the invoice generation feature to mitigate this vulnerability in Red Hat Quay.”
-
Red Hat Quay v3 quay/quay-rhel8 v3.6.0-62fixed: vendor fix “Disable the invoice generation feature to mitigate this vulnerability in Red Hat Quay.” RHSA-2021:3917
-
Red Hat Enterprise Linux AppStream (v. 8) python-pillow 5.1.1-16.el8, python3-pillow 5.1.1-16.el8fixed: vendor fix “Disable the invoice generation feature to mitigate this vulnerability in Red Hat Quay.” RHSA-2021:4149
-
Red Hat Quay v3 quay/clair-rhel8 v3.6.0-70, quay/quay-builder-rhel8 v3.6.0-44, quay/quay-operator-rhel8 v3.6.0-43, quay/quay-operator-bundle v3.6.0-48, quay/quay-bridge-operator-rhel8 v3.6.0-40, quay/quay-bridge-operator-bundle v3.6.0-35, +3 morenot 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
Exploit prediction
2.37% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
| OSV | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | pillow | <8.1.1 |
8.1.1 |
| bitnami | pillow | <8.1.1 |
8.1.1 |
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
github.com
/python-pillow/Pillow/commit/86f02f7c70862a0954bfe8133736d352db978eaa
web
-
github.com
/python-pillow/Pillow/commit/e25be1e33dc526bfd1094bc778a54d8e29bf66c9
web
-
security.gentoo.org
/glsa/202107-33
vendor-advisory, web, third-party-advisory, advisory
-
pillow.readthedocs.io
/en/stable/releasenotes/8.1.1.html
web, release-notes, vendor-advisory, advisory
-
lists.debian.org
/debian-lts-announce/2021/07/msg00018.html
mailing-list, web, third-party-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-25290
advisory, web
-
github.com
/advisories/GHSA-8xjq-8fcg-g5hw
advisory
-
github.com
/pypa/advisory-database/tree/main/vulns/pillow/PYSEC-2021-36.yaml
web
-
github.com
/python-pillow/Pillow
package
Sources
- CVE List CVE-2021-25290
- GitHub Advisory GHSA-8xjq-8fcg-g5hw
- NVD CVE-2021-25290
- OSV BIT-pillow-2021-25290
- OSV PYSEC-2021-36
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.