CVE-2023-4885Network attack vector

Sensitive-information exposure via VNF communication interception

Published Oct 3, 2023 · Updated Sep 19, 2024

Man-in-the-middle exposure in Open5GS 2.4.10 and earlier allows man-in-the-middle attackers to read sensitive VNF communications. INCIBE has not published the component or implementation error that permits interception of VNF communications. Exploitation requires a network position between communicating VNFs; the record reports sensitive-information exposure without alteration or service interruption.

CVSS severity6.5
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Man-in-the-middle exposure in Open5GS 2.4.10 and earlier allows man-in-the-middle attackers to read sensitive VNF communications. INCIBE has not published the component or implementation error that permits interception of VNF communications. Exploitation requires a network position between communicating VNFs; the record reports sensitive-information exposure without alteration or service interruption.

The record

CVE
CVE-2023-4885
Published
Oct 3, 2023
Updated
Sep 19, 2024
Vendor
Open5GS
Product
Open5GS
Classifications
CWE-300, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 3, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 19, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.4.10 and prior

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Open5GS · Open5GSversion=2.4.10 and prior

Published CVSS scores

6.5Spanish National Cybersecurity Institute, S.A. (INCIBE)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
5.9NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-300Channel Accessible by Non-Endpoint
T1557Adversary-in-the-Middle

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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