CVE-2026-27643Disclosure(free5gc / udr)

LOWCVSS 5.3 · MEDIUM

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

free5GC UDR is the user data repository (UDR) for free5GC, an an open-source project for 5th generation (5G) mobile core networks. In versions up to and including 1.4.1, the NEF component reliably leaks internal parsing error details (e.g., invalid character 'n' after top-level value) to remote clients, which can aid attackers in service fingerprinting. All deployments of free5GC using the Nnef_PfdManagement service may be affected. free5gc/udr pull request 56 contains a patch for the issue. There is no direct workaround at the application level. The recommendation is to apply the provided patch.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-209

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • udr

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • General: 1 classified signal
  • 2 total mentions across 1 day

Affected systems

Vendors
Products
udr

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-02-24: 2Technical Details · 2026-02-24: 102-24
Signal classification2 categories
Disclosure
150.0%
General
150.0%
Referenced assets2 URLs
Full discourse2 posts
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-27643 Information Disclosure in free5GC UDR NEF Component Parsing Errors https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-27643

    Post summary

    The text announces CVE-2026-27643, an information disclosure vulnerability in the free5GC UDR NEF component due to parsing errors, and provides a link to a vulnerability details page.

    0001056
    4.0K followersView on X
  • CVE@CVEnew
    General

    CVE-2026-27643 free5GC UDR is the user data repository (UDR) for free5GC, an an open-source project for 5th generation (5G) mobile core networks. In versions up to and including 1.4… https://www.cve.org/CVERecord?id=CVE-2026-27643

    Post summary

    The text merely references CVE-2026-27643 in free5GC UDR, noting affected versions up to 1.4, without providing further technical or exploit details.

    00000155
    56.5K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appfree5gcudr-go-

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