Open5GS up to 2.7.6 VoLTE Cx-Test src/hss/hss-cx-path.c hss_ogs_diam_cx_mar_cb OGS_KEY_LEN stack-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.52

Summaryinfo

A vulnerability marked as critical has been reported in Open5GS up to 2.7.6. Affected by this issue is the function hss_ogs_diam_cx_mar_cb of the file src/hss/hss-cx-path.c of the component VoLTE Cx-Test. This manipulation of the argument OGS_KEY_LEN causes stack-based overflow. This vulnerability is registered as CVE-2025-15555. Remote exploitation of the attack is possible. No exploit is available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability has been found in Open5GS up to 2.7.6 and classified as critical. Affected by this vulnerability is the function hss_ogs_diam_cx_mar_cb of the file src/hss/hss-cx-path.c of the component VoLTE Cx-Test. The manipulation of the argument OGS_KEY_LEN with an unknown input leads to a stack-based overflow vulnerability. The CWE definition for the vulnerability is CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was published by Luca Jungnickel with Fraunhofer FOKUS as 4177. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2025-15555. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

Applying the patch 54dda041211098730221d0ae20a2f9f9173e7a21 is able to eliminate this problem. The bugfix is ready for download at github.com.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.5

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 8.2
NVD Vector: 🔒

CNA Base Score: 7.3
CNA Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: 54dda041211098730221d0ae20a2f9f9173e7a21

Timelineinfo

02/02/2026 Advisory disclosed
02/02/2026 +0 days VulDB entry created
04/07/2026 +64 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 4177
Researcher: Luca Jungnickel
Organization: Fraunhofer FOKUS
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2025-15555 (🔒)
GCVE (CVE): GCVE-0-2025-15555
GCVE (VulDB): GCVE-100-343795

Entryinfo

Created: 02/02/2026 20:07
Updated: 04/07/2026 17:49
Changes: 02/02/2026 20:07 (58), 02/05/2026 13:48 (30), 02/12/2026 08:06 (11), 04/07/2026 17:49 (3)
Complete: 🔍
Submitter: jungnickel
Committer: jungnickel
Cache ID: 216:5B8:103

Submitinfo

Accepted

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