CVE-2026-55211: Equinor Surfio

Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days.

Surfio is a library for reading and writing surface files. Prior to 0.0.19, surfio does not correctly validate size fields in IRAP files, leading to a buffer overflow when untrusted files are parsed. The severity assumes surfio is used to parse untrusted files in a networking context such as a web service. This issue is fixed in version 0.0.19.

Affected products

• Equinor Surfio: before 0.0.19 (fixed in 0.0.19)

Published 2026-09-15. Last modified 2026-09-30.