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TI-2026-32292 Aliases CVE-2026-44324GHSA-jqfc-gwj5-3w63

Incorrect type conversion in free5gc

Priority MEDIUM 62CWE-704Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-704 and the CVSS impact.

Summary

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's UDR nudr-dr DELETE /subscription-data/{ueId}/{servingPlmnId}/ee-subscriptions/{subsId}/amf-subscriptions handler panics on a single authenticated request against a fresh UDR instance when the supplied ueId does not exist in UESubsCollection. The processor checks value, ok := udrSelf.UESubsCollection.Load(ueId) and sets a 404 USER_NOT_FOUND problem-details on the miss path, but execution continues and immediately runs value.(*udr_context.UESubsData) -- a Go type assertion on a nil interface, which panics with interface conversion: interface {} is nil, not *context.UESubsData. Gin recovery converts the panic into HTTP 500, but the endpoint remains repeatedly panicable. This vulnerability is fixed in 4.2.2.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0042 36th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Fixed free5gc (free5gc): 4.2.2github.com/free5gc/udr (Go): 1.4.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
free5gcfree5gcbefore 4.2.24.2.2Patch availableCNA
—github.com/free5gc/udr (Go)before 1.4.31.4.3Patch availableGHSA-jqfc-gwj5-3w63
  • free5gc Vendorfree5gc Affected before 4.2.2 Fixed in 4.2.2 Patch available CNA
  • github.com/free5gc/udr (Go) Vendor— Affected before 1.4.3 Fixed in 1.4.3 Patch available GHSA-jqfc-gwj5-3w63

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:free5gc:free5gc:*:*:*:*:*:*:*:*before 4.2.2Vulnerablefree5gc
  • cpe:2.3:a:free5gc:free5gc:*:*:*:*:*:*:*:* Versions before 4.2.2 Vulnerable ·free5gc

Remediation

  • Fix · CNA free5gc (free5gc) Fixed in 4.2.2
  • Fix · GHSA-jqfc-gwj5-3w63 github.com/free5gc/udr (Go) Fixed in 1.4.3 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-44324
  2. 2026-10-03 Alias added: GHSA-jqfc-gwj5-3w63
  3. 2026-10-25 EPSS moved to the below the 50th percentile

References

Exploit 2

Patch 2

Advisory 1

Other 1

  • TI-2026-32298 Incorrect authorization in free5gc CVSS 3.1CRITICAL 10.0
  • TI-2026-32297 free5GC: SMF UPI management interface lacks auth middleware; unauthenticated topology read/write requests reach handlers CVSS 3.1CRITICAL 10.0
  • TI-2026-32295 free5GC: NEF nnef-oam route group is unauthenticated; no-token requests reach the OAM handler CVSS 3.1CRITICAL 10.0
  • TI-2025-39412 free5gc v4.1.0 and before is vulnerable to Buffer Overflow. CVSS 3.1CRITICAL 9.8
  • TI-2026-32294 Missing authorization in free5gc CVSS 3.1CRITICAL 9.4
  • TI-2026-32283 Missing authorization in free5gc CVSS 3.1CRITICAL 9.4
See all 58 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences