Open5GS 2.6.1 through 2.8.0 contains an out-of-bounds read vulnerability in parse_scheme_output() in lib/sbi/conv.c during SUCI de-concealment due to incomplete length validation. Remote unauthenticated UEs or SBI peers can submit a crafted SUCI with a 42-byte scheme output to a UDM, triggering a heap over-read past the buffer.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 3
- StatusPublished → DeferredNVD modified 2026-10-26 16:17
- CVSS6.3 (v4.0, CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N) → 6.3 (v4.0, CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/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)NVD modified 2026-10-26 16:17
- First seenCVSS 6.3 · open5gsNVD modified 2026-10-26 14:59
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 5
- https://github.com/open5gs/open5gs
- https://github.com/open5gs/open5gs/blob/v2.8.0/lib/sbi/conv.c#L39
- https://github.com/open5gs/open5gs/commit/fdddcd5e3359703f0a945b308e64494a18a534f1
- https://github.com/open5gs/open5gs/security/advisories/GHSA-vp5f-rg8g-8p7j
- https://www.vulncheck.com/advisories/open5gs-2.6.1-through-2.8.0-out-of-bounds-read-via-parse-scheme-output