CVE-2024-14042Public exploitNetwork attack vector

Authenticated memory corruption via oversized S6a AVP

Published Aug 11, 2026 · Updated Aug 11, 2026

Stack-based buffer overflow in Open5GS 2.7.0 through 2.7.1 allows remote authenticated users to corrupt memory via a Diameter S6a request. The hss_ogs_diam_s6a_air_cb and hss_ogs_diam_s6a_ulr_cb callbacks copy an attacker-controlled Visited-PLMN-Id length into a fixed-size stack object without bounding it. The sender must connect as a Diameter peer and target an existing subscriber; the public packet capture demonstrates stack corruption, while further code execution is not established.

CVSS severityUnavailable
Unscored
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Open5GS 2.7.0 through 2.7.1 allows remote authenticated users to corrupt memory via a Diameter S6a request. The hss_ogs_diam_s6a_air_cb and hss_ogs_diam_s6a_ulr_cb callbacks copy an attacker-controlled Visited-PLMN-Id length into a fixed-size stack object without bounding it. The sender must connect as a Diameter peer and target an existing subscriber; the public packet capture demonstrates stack corruption, while further code execution is not established.

The record

CVE
CVE-2024-14042
Published
Aug 11, 2026
Updated
Aug 11, 2026
Vendor
Open5GS
Product
Open5GS
Classifications
CWE-119, CWE-121
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 11, 2026Record 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=2.7.0
  2. Affected versionversion=2.7.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Open5GS · Open5GSversion=2.7.0; version=2.7.1

Published CVSS scores

6.3VulDB CNACVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
6.3VulDB CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
6.5VulDB CNAAV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C
5.3VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-119Memory Corruption
CWE-121Stack-based Buffer Overflow

Public exploit references

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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