CVE-2026-27622 is a high-severity vulnerability affecting OpenEXR, an image storage format used in the motion picture industry. The flaw, located in the CompositeDeepScanLine::readPixels function, allows an attacker to cause a heap buffer overflow by manipulating per-pixel totals, leading to undersized sample buffers. This can result in arbitrary code execution, data compromise, or denial of service, with a CVSS score of 7.8. While no active exploitation or public exploit code has been observed, and community discussion is minimal, the vulnerability is fixed in OpenEXR versions v3.2.6, v3.3.8, and v3.4.6.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 3.2.6CPE matchmatch criteria | cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:* | ||
>= 3.3.0, < 3.3.8CPE matchmatch criteria | cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:* | ||
>= 3.4.0, < 3.4.6CPE matchmatch criteria | cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/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
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The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.