Out-of-bounds Read in Open5gs
CVE-2026-116544
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/open5gs/open5gs/security/advisories/GHSA-vp5f-rg8g-8p7j (vendor-advisory)
- github.com/open5gs/open5gs/commit/fdddcd5e3359703f0a945b308e64494a18a534f1 (patch)
- github.com/open5gs/open5gs/blob/v2.8.0/lib/sbi/conv.c (technical-description)
- github.com/open5gs/open5gs (product)
- www.vulncheck.com/advisories/open5gs-2.6.1-through-2.8.0-out-of-bounds-read-via… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-116544?
- CVE-2026-116544 is a low-severity vulnerability in Open5gs, classified under Out-of-bounds Read. CVSS score: 3.7/10. Published 2026-10-26.
- How severe is CVE-2026-116544?
- Low severity. CVSS v3 base score is 3.7 out of 10.