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NVD Vulnerability Details :
CVE-2026-33062
Analyzed
More InfoOfficial Page
Source-security-advisories@github.com
View Known Exploited Vulnerability (KEV) details
Published At-20 Mar, 2026 | 03:16
Updated At-27 Mar, 2026 | 17:13

free5GC is an open source 5G core network. free5GC NRF prior to version 1.4.2 has an Improper Input Validation vulnerability leading to Denial of Service. All deployments of free5GC using the NRF discovery service are affected. The `EncodeGroupId` function attempts to access array indices [0], [1], [2] without validating the length of the split data. When the parameter contains insufficient separator characters, the code panics with "index out of range". A remote attacker can cause the NRF service to panic and crash by sending a crafted HTTP GET request with a malformed `group-id-list` parameter. This results in complete denial of service for the NRF discovery service. free5GC NRF version 1.4.2 fixes the issue. There is no direct workaround at the application level. The recommendation is to apply the provided patch or restrict access to the NRF API to trusted sources only.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.08.7HIGH
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Type: Secondary
Version: 4.0
Base score: 8.7
Base severity: HIGH
Vector:
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Type: Primary
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CPE Matches
free5gc
free5gc
>>free5gc>>Versions before 1.4.2(exclusive)
cpe:2.3:a:free5gc:free5gc:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-284Primarysecurity-advisories@github.com
NVD-CWE-noinfoPrimarynvd@nist.gov
CWE ID: CWE-284
Type: Primary
Source: security-advisories@github.com
CWE ID: NVD-CWE-noinfo
Type: Primary
Source: nvd@nist.gov
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/free5gc/free5gc/issues/777security-advisories@github.com
Issue Tracking
Exploit
https://github.com/free5gc/free5gc/security/advisories/GHSA-7c47-xr7q-p6hgsecurity-advisories@github.com
Vendor Advisory
https://github.com/free5gc/nrf/commit/dac77d8f8f2e0f041c5634fb3c685dcb9734b872security-advisories@github.com
Patch
https://github.com/free5gc/nrf/pull/80security-advisories@github.com
Patch
Hyperlink: https://github.com/free5gc/free5gc/issues/777
Source: security-advisories@github.com
Resource:
Issue Tracking
Exploit
Hyperlink: https://github.com/free5gc/free5gc/security/advisories/GHSA-7c47-xr7q-p6hg
Source: security-advisories@github.com
Resource:
Vendor Advisory
Hyperlink: https://github.com/free5gc/nrf/commit/dac77d8f8f2e0f041c5634fb3c685dcb9734b872
Source: security-advisories@github.com
Resource:
Patch
Hyperlink: https://github.com/free5gc/nrf/pull/80
Source: security-advisories@github.com
Resource:
Patch
Change History
0Changes found
Details not found