CVE-2026-55211surfio IRAP header size fields cause out-of-bounds reads
- 9.8CriticalCVSS base score
- 0.74%Exploitation in 30 daysEPSS · top 45% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By GitHub_M
- 3 months later
· 3 months later
Published
- 2 days later
· 2 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.0 | Critical9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Deferred | 3.0 | Critical9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.74% · top 45% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- PyPIsurfioGHSA-rcr2-hggw-43wm (opens in a new tab)
References
References5
- https://github.com/equinor/surfio/security/advisories/GHSA-rcr2-hggw-43wm (opens in a new tab)x_refsource_CONFIRM
- https://github.com/equinor/surfio/pull/86 (opens in a new tab)x_refsource_MISC
- https://github.com/equinor/surfio/commit/1619750bce28e39c4f378d2fb6d28b72380a12aa (opens in a new tab)x_refsource_MISC
- https://github.com/equinor/surfio/commit/e009c0cad145484f854aeb22d1979f9216b291db (opens in a new tab)x_refsource_MISC
- https://github.com/equinor/surfio/releases/tag/0.0.19 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-78671 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-rcr2-hggw-43wm (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-55211)Record last updated .