surfio IRAP header size fields cause out-of-bounds reads
Priority MEDIUM 50CWE-125Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · CNA. Fix status from CNA and GitHub.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00744 54th percentileScored 2026-11-07
Fix Fixed surfio (equinor): 0.0.19surfio (PyPI): 0.0.19
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| equinor | surfio | before 0.0.19 | 0.0.19 | Patch available | CNA |
| — | surfio (PyPI) | before 0.0.19 | 0.0.19 | Patch available | GHSA-rcr2-hggw-43wm |
- surfio Vendorequinor Affected before 0.0.19 Fixed in 0.0.19 Patch available CNA
- surfio (PyPI) Vendor— Affected before 0.0.19 Fixed in 0.0.19 Patch available GHSA-rcr2-hggw-43wm
Remediation
- Fix · CNA surfio (equinor) Fixed in 0.0.19
- Fix · GHSA-rcr2-hggw-43wm surfio (PyPI) Fixed in 0.0.19 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-55211
- 2026-10-03 Alias added: GHSA-rcr2-hggw-43wm
References
Other 6
- https://github.com/equinor/surfio/security/advisories/GHSA-rcr2-hggw-43wm
- https://github.com/equinor/surfio/pull/86
- https://github.com/equinor/surfio/commit/1619750bce28e39c4f378d2fb6d28b72380a12aa
- https://github.com/equinor/surfio/commit/e009c0cad145484f854aeb22d1979f9216b291db
- https://github.com/equinor/surfio/releases/tag/0.0.19
- https://github.com/equinor/surfio
More equinor vulnerabilities
- TI-2026-39889 resdata insufficiently validates untrusted GRDECL files CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-55211 · CVE Program
- CVE-2026-55211 · NVD
- FIRST EPSS
- GHSA-rcr2-hggw-43wm · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences