CVE-2020-5311

Name: CVE-2020-5311
Creator: NVD / NIST
Published: 2020-01-03T01:15:11.167+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 4.21%

Last modified Jun 17, 2026

CVE-2020-5311 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. libImaging/SgiRleDecode.c in Pillow before 6.2.2 has an SGI buffer overflow.. EPSS estimates a 4.21% chance of exploitation in the next 30 days.

Description

libImaging/SgiRleDecode.c in Pillow before 6.2.2 has an SGI buffer overflow.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

4.21%

89.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Python	Pillow	< 6.2.2
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	19.10
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Fedoraproject	Fedora	30
Fedoraproject	Fedora	31

References

https://access.redhat.com/errata/RHSA-2020:0566Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0580Third Party Advisory
https://github.com/python-pillow/Pillow/commit/a79b65c47c7dc6fe623aadf09aa6192fc54548f3Patch, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2MMU3WT2X64GS5WHDPKKC2WZA7UIIQ3A/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3DUMIBUYGJRAVJCTFUWBRLVQKOUTVX5P/
https://pillow.readthedocs.io/en/stable/releasenotes/6.2.2.htmlRelease Notes, Third Party Advisory
https://usn.ubuntu.com/4272-1/Third Party Advisory
https://www.debian.org/security/2020/dsa-4631Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0566Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0580Third Party Advisory
https://github.com/python-pillow/Pillow/commit/a79b65c47c7dc6fe623aadf09aa6192fc54548f3Patch, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2MMU3WT2X64GS5WHDPKKC2WZA7UIIQ3A/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3DUMIBUYGJRAVJCTFUWBRLVQKOUTVX5P/
https://pillow.readthedocs.io/en/stable/releasenotes/6.2.2.htmlRelease Notes, Third Party Advisory
https://usn.ubuntu.com/4272-1/Third Party Advisory
https://www.debian.org/security/2020/dsa-4631Third Party Advisory

Timeline

Published: Jan 3, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-5311?

libImaging/SgiRleDecode.c in Pillow before 6.2.2 has an SGI buffer overflow.

How severe is CVE-2020-5311?

CVE-2020-5311 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 4.21% probability of exploitation in the next 30 days.

How do I fix CVE-2020-5311?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-5311?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST