CVE-2026-116544

medium

Description

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.

References

https://www.vulncheck.com/advisories/open5gs-2.6.1-through-2.8.0-out-of-bounds-read-via-parse-scheme-output

https://github.com/open5gs/open5gs/security/advisories/GHSA-vp5f-rg8g-8p7j

https://github.com/open5gs/open5gs/commit/fdddcd5e3359703f0a945b308e64494a18a534f1

https://github.com/open5gs/open5gs/blob/v2.8.0/lib/sbi/conv.c#L39

https://github.com/open5gs/open5gs

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-109914

Details

Source: Mitre, NVD

Published: 2026-10-26

Updated: 2026-10-26

Risk Information

CVSS v2

Base Score: 2.6

Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:N/A:N

Severity: Low

CVSS v3

Base Score: 3.7

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Severity: Low

CVSS v4

Base Score: 6.3

Vector: 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

Severity: Medium

EPSS

EPSS: 0.00354