How severe is CVE-2026-41136?

CVE-2026-41136 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-41136 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-41136?

CVE-2026-41136 primarily affects Free5gc Amf. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-41136?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-41136 have an EU (EUVD) identifier?

Yes. CVE-2026-41136 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-24576.

When was CVE-2026-41136 published?

CVE-2026-41136 was published on 2026-04-22 and last updated on 2026-06-17.

CVE-2026-41136

CVE-2026-41136 is a medium-severity vulnerability in Free5gc Amf with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-440.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v4: 5.5
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-24576
Weakness: CWE-440
Affected product: Free5gc Amf
Published: 2026-04-22
Last modified: 2026-06-17

Description

free5GC AMF provides Access & Mobility Management Function (AMF) for free5GC, an an open-source project for 5th generation (5G) mobile core networks. Prior to version 1.4.3, the `HTTPUEContextTransfer` handler in `internal/sbi/api_communication.go` does not include a `default` case in the `Content-Type` switch statement. When a request arrives with an unsupported `Content-Type`, the deserialization step is silently skipped, `err` remains `nil`, and the processor is invoked with a completely uninitialized `UeContextTransferRequest` object. Version 1.4.3 contains a fix.

Frequently asked questions

What is CVE-2026-41136?: free5GC AMF provides Access & Mobility Management Function (AMF) for free5GC, an an open-source project for 5th generation (5G) mobile core networks. Prior to version 1.4.3, the `HTTPUEContextTransfer` handler in `internal/sbi/api_communication.go` does not include a `default` case in the `Content-Type` switch statement. When a request arrives with an unsupported `Content-Type`, the deserialization step is silently skipped, `err` remains `nil`, and the processor is invoked with a completely uninitialized `UeContextTransferRequest` object. Version 1.4.3 contains a fix.
How severe is CVE-2026-41136?: CVE-2026-41136 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-41136 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-41136?: CVE-2026-41136 primarily affects Free5gc Amf. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-41136?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-41136 have an EU (EUVD) identifier?: Yes. CVE-2026-41136 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-24576.
When was CVE-2026-41136 published?: CVE-2026-41136 was published on 2026-04-22 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:free5gc:amf:*:*:*:*:*:go:*:*
cpe:2.3:a:free5gc:free5gc:*:*:*:*:*:*:*:*

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