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CVE-2026-33192

Free5GC is an open-source Linux Foundation project for 5th generation (5G) mobile core networks. In versions prior to 1.4.2, the UDM incorrectly converts a downstream 400 Bad Request (from UDR) into a 500 Internal Server Error when handling PATCH requests with an empty supi path parameter. Additionally, the UDM incorrectly translates the PATCH method to PUT when forwarding to UDR, indicating a deeper architectural issue. This leaks internal error handling behavior, making it difficult for client
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:3ec9ff84dba310be61568a0155fbf737c9a75b0db81e540170404902ce7c54ff
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"free5gc","vendor":"free5gc","versions":[{"status":"affected","version":"< 1.4.2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4197293a840ac140aaace2f63a41eb2eb53903ec56cefa3e53c67eb0a038f4b1 · sha256:7eb36487ecf83091… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:4197293a840ac140aaace2f63a41eb2eb53903ec56cefa3e53c67eb0a038f4b1 · sha256:7eb36487ecf83091… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-209","description":"CWE-209: Generation of Error Message Containing Sensitive Information","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:4197293a840ac140aaace2f63a41eb2eb53903ec56cefa3e53c67eb0a038f4b1 · sha256:7eb36487ecf83091… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/free5gc/free5gc/issues/784","tags":["x_refsource_MISC"],"url":"https://github.com/free5gc/free5gc/issues/784"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4197293a840ac140aaace2f63a41eb2eb53903ec56cefa3e53c67eb0a038f4b1 · sha256:7eb36487ecf83091… · /containers/cna/references/1
{"name":"https://github.com/free5gc/free5gc/security/advisories/GHSA-5rvc-5cwx-g5x8","tags":["x_refsource_CONFIRM"],"url":"https://github.com/free5gc/free5gc/security/advisories/GHSA-5rvc-5cwx-g5x8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4197293a840ac140aaace2f63a41eb2eb53903ec56cefa3e53c67eb0a038f4b1 · sha256:7eb36487ecf83091… · /containers/cna/references/0
{"name":"https://github.com/free5gc/udm/pull/79","tags":["x_refsource_MISC"],"url":"https://github.com/free5gc/udm/pull/79"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4197293a840ac140aaace2f63a41eb2eb53903ec56cefa3e53c67eb0a038f4b1 · sha256:7eb36487ecf83091… · /containers/cna/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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