Secuno
ENNL
Book demo

CVE-2026-37233

Mosaic5g Flexric vulnerability

7.5 HIGHPublic exploitEPSS 0.57%
  1. Published1 Jun 2026

Description

FlexRIC v2.0.0 contains an authorization bypass in the iApp's xApp isolation mechanism. The equality function eq_xapp_ric_gen_id() in src/ric/iApp/xapp_ric_id.c compares m0->xapp_id against itself (m0->xapp_id) instead of the other argument (m1->xapp_id), effectively ignoring the xApp identity dimension. A malicious xApp connected to the iApp (port 36422) can delete any other xApp's subscriptions by sending an E42_RIC_SUBSCRIPTION_DELETE_REQUEST with a matching ric_gen_id. This breaks multi-tenant isolation in any deployment with multiple xApps sharing the same RIC.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

Mosaic5g Flexric2.0.0

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-394538.3
Navigating to a certain URL on the switch’s web server causes the switch to reboot.…
CVE-2026-633888.4
Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent…
CVE-2026-507228.1
Libreswan, via the function RSA_authenticate_hash_signature_pkcs1_1_5_rsa(), did not…
CVE-2026-507218.1
Libreswan, via the function RSA_authenticate_hash_signature_raw_rsa(), did not…
CVE-2026-529528.8
In the Linux kernel, the following vulnerability has been resolved: iommu: Fix WARN_ON…
CVE-2026-317398.8
In the Linux kernel, the following vulnerability has been resolved: crypto: tegra -…

Frequently asked

Is CVE-2026-37233 being actively exploited?

CVE-2026-37233 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.57%.

How severe is CVE-2026-37233?

CVE-2026-37233 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 0.57% probability of exploitation.

Which products are affected by CVE-2026-37233?

Affected products include Mosaic5g Flexric.

How do I fix CVE-2026-37233?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-37233 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.