PT-2026-33585 · Sail · Sail

Published 2026-04-18 · Updated 2026-04-20 · CVE-2026-40492

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions SAIL versions prior to commit 36aa5c7ec8a2bb35f6fb867a1177a6f141156b02

Description The XWD codec resolves pixel format based on the pixmap depth variable, but the byte-swap code independently uses bits per pixel. When pixmap depth is 8 (BPP8 INDEXED, 1 byte/pixel buffer) and bits per pixel is 32, the byte-swap loop accesses memory as uint32 t*, resulting in reading or writing four times the allocated buffer size.

Recommendations Update to the version containing commit 36aa5c7ec8a2bb35f6fb867a1177a6f141156b02.

Exploit

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2026-40492

Affected Products

Sail

References · 12

• 🔥 https://github.com/HappySeaFox/sail/security/advisories/GHSA-526v-vm72-4v64 · Exploit
• https://cve.org/CVERecord?id=CVE-2026-40492 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-40492 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-40492 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-40492 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-40492 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-40492 · Vendor Advisory
• https://github.com/HappySeaFox/sail/commit/36aa5c7ec8a2bb35f6fb867a1177a6f141156b02 · Note
• https://twitter.com/CVEnew/status/2045467327894892863 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2045409076750774666 · Twitter Post
• https://twitter.com/PurpleOps_io/status/2045889307081109913 · Twitter Post
• https://twitter.com/0dayPublishing/status/2046256297784254825 · Twitter Post