Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/open5gs/open5gs
- https://github.com/open5gs/open5gs/blob/v2.8.0/lib/sbi/contrib/multipart_parser.
- https://github.com/open5gs/open5gs/blob/v2.8.0/lib/sbi/message.c#L3372
- https://github.com/open5gs/open5gs/commit/6820c2743b5b5e126e3755d2f92dae2b236732
- 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-bou
FAQ
What is CVE-2026-116543?
CVE-2026-116543 is a vulnerability with a CVSS score of 7.5 (HIGH). 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. Att...
How severe is CVE-2026-116543?
CVE-2026-116543 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-116543?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.