# CVE-2026-55211

## Summary

- **CVE ID:** CVE-2026-55211
- **Severity:** CRITICAL
- **CVSS Score:** 9.8 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
- **CWE:** CWE-125
- **Published:** Sep 15, 2026
- **Last Modified:** Sep 17, 2026

## Description

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 (< 0.0.19)

## References

- [CNA](https://github.com/equinor/surfio/security/advisories/GHSA-rcr2-hggw-43wm)
- [CNA](https://github.com/equinor/surfio/pull/86)
- [CNA](https://github.com/equinor/surfio/commit/1619750bce28e39c4f378d2fb6d28b72380a12aa)
- [CNA](https://github.com/equinor/surfio/commit/e009c0cad145484f854aeb22d1979f9216b291db)
- [CNA](https://github.com/equinor/surfio/releases/tag/0.0.19)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.54%
- **EPSS Percentile:** 44.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._