CVE-2026-116543

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/open5gs/open5gs
https://github.com/open5gs/open5gs/blob/v2.8.0/lib/sbi/contrib/multipart_parser.c#L260
https://github.com/open5gs/open5gs/blob/v2.8.0/lib/sbi/message.c#L3372
https://github.com/open5gs/open5gs/commit/6820c2743b5b5e126e3755d2f92dae2b236732df
https://github.com/open5gs/open5gs/security/advisories/GHSA-25v2-v588-jq8g
https://www.vulncheck.com/advisories/open5gs-1.3.0-through-2.8.0-heap-out-of-bounds-write-via-sbi-multipart-parser

Configurations

No configuration.

History

26 Oct 2026, 16:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-26 16:17

Updated : 2026-10-26 16:17

NVD link : CVE-2026-116543

Mitre link : CVE-2026-116543

CVE.ORG link : CVE-2026-116543

JSON object : View

Products Affected

No product.

CWE

CWE-787

Out-of-bounds Write

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