CVE-2026-37228 Denial of service in n/a
Remote unauthenticated attackers can crash FlexRIC components by sending oversized SCTP messages, causing a denial of service in near-RT RIC environments.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-37228?
CVE-2026-37228 is a high-severity denial of service vulnerability in n/a, published on 1 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
FlexRIC v2.0.0 contains a reachable assertion in e2ap_recv_sctp_msg() (src/lib/ep/e2ap_ep.c). The function allocates a fixed 32KB receive buffer and enforces assert(rc < len) on the sctp_recvmsg() return value. A remote unauthenticated attacker can send a single SCTP message with payload >= 32,768 bytes to crash the near-RT RIC, iApp, E2 Agent, or xApp process via SIGABRT. No valid E2AP PDU is required. All four SCTP endpoint types (ports 36421 and 36422) share this vulnerable code path. In Release builds (NDEBUG), the stripped assertion leads to a signed-to-unsigned integer overflow and potential out-of-bounds read.
Weakness: CWE-617
Which versions are affected by CVE-2026-37228?
It affects 1 product.
Products include Mosaic5g Flexric.
How do I fix CVE-2026-37228?
No fix has been published for CVE-2026-37228 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-37228 being exploited?
There is no known exploitation of CVE-2026-37228 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-hgh6-r5p8-wcxj.