CVE-2026-116543
7.5, highopen5gs Out-of-Bounds Write Vulnerability
- CVSS
- 7.5, high high CVSS v3.1
- EPSS, next 30 days
- n/a
- Exploitation
- No public evidence
- Published
- 26 Oct 2026yesterday
Description
Open5GS 1.3.0 through 2.8.0 contains a heap out-of-bounds write vulnerability in parse_multipart() that allows unauthenticated attackers to corrupt memory by supplying an empty multipart boundary. Attackers can send a single crafted multipart/related request to the SBI interface of any network function, overflowing the lookbehind buffer and crashing it.
Details
- Vendor
- Open5gs
- Product
- open5gs
- Weakness
- CWE-787 (opens in a new tab)
- Status
- Deferred
- Updated
- 26 Oct 2026
- Assigner
- disclosure@vulncheck.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References 6
Patches and fixes 1
Advisories 1
Other references 4
- github.com /open5gs/open5gs (opens in a new tab)
- github.com /open5gs/open5gs/blob/v2.8.0/lib/sbi/contrib/multipart_parser.c#L260 (opens in a new tab)
- github.com /open5gs/open5gs/blob/v2.8.0/lib/sbi/message.c#L3372 (opens in a new tab)
- vulncheck.com /advisories/open5gs-1.3.0-through-2.8.0-heap-out-of-bounds-write-via-sbi-multipart-parser (opens in a new tab)
The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.
Beyond this page
Is CVE-2026-116543 in your network?
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Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 27 Oct 2026, not the live upstream state.