Name: CVE-2026-54058: Out-of-bounds Read
Creator: Rapid7
Published: 2026-07-14T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-54058, CWE-125, CVSS 9.1, EPSS 0.00384

Pillow is a Python imaging library. Prior to 12.3.0, when Pillow loads an uncompressed McIdas AREA image from a filename through the mmap raw codec path, attacker-controlled header words can set a row stride smaller than the natural row width, causing pixel access such as Image.tobytes(), getpixel, convert, or save to read beyond the mapped region and disclose adjacent process memory or fault. This issue is fixed in version 12.3.0.

CVSS Details

CVSS 4.0 Base Score: 8.3 (HIGH)
CVSS 4.0 Vector: (CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)
CVSS 3.1 Base Score: 9.1
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Alma_linux	—	Upgrade python3-pillowUpgrade python3-pillow-docUpgrade python3-pillow-tkUpgrade python3-pillow-devel	Aug 2, 2026	Jul 29, 2026
Amazon Linux Ami 2	—	Upgrade python-pillowUpgrade python-pillow-saneUpgrade python-pillow-tkUpgrade python-pillow-develUpgrade python-pillow-debuginfoUpgrade python-pillow-doc	Aug 5, 2026	Aug 5, 2026
Amazon_linux_2023	—	Upgrade python-pillow-debugsourceUpgrade python-pillow-debuginfoUpgrade python3-pillow-develUpgrade python3-pillow-debuginfoUpgrade python3-pillow-tk-debuginfoUpgrade python3-pillow-tkUpgrade python3-pillow	Aug 10, 2026	Jul 14, 2026
Oracle_linux	—	Upgrade python3-pillowUpgrade python3-pillow-docUpgrade python3-pillow-tkUpgrade python3-pillow-devel	Oct 22, 2026	Jul 14, 2026
Redhat_linux	—	Upgrade python3-pillow-develUpgrade python3-pillow-tkUpgrade python3-pillow-debuginfoUpgrade python-pillow-debugsourceUpgrade python3-pillow-tk-debuginfoUpgrade python-pillow-debuginfoUpgrade python3-pillow-docUpgrade python3-pillow	Jul 20, 2026	Jul 14, 2026
Rocky_linux	—	Upgrade python3-pillow-develUpgrade python-pillow-debugsourceUpgrade python3-pillow-tkUpgrade python3-pillowUpgrade python3-pillow-debuginfoUpgrade python-pillow-debuginfoUpgrade python3-pillow-tk-debuginfo	Aug 3, 2026	Jul 31, 2026

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CVSS Details

Covered by Rapid7

Prioritize with Active Threat Intelligence