CVE-2026-104598 Details
Description
libosmo-sigtran through 2.2.1 contains an out-of-bounds read in the M3UA NOTIFY decoder in src/m3ua.c. This allows a remote attacker to obtain sensitive information.
A heap-based out-of-bounds read vulnerability has been identified in libosmo-sigtran versions through 2.2.1. The issue arises in the M3UA NOTIFY decoder, where the INFO_STRING Information Element (IE) is copied without a null terminator, allowing a remote attacker to read sensitive information from adjacent memory. This vulnerability is pre-authentication and can be exploited by sending a NOTIFY message with an INFO_STRING that lacks a terminating byte.
Users can upgrade to libosmo-sigtran version 2.3.0 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 26, 2026CISA-ADP
Assessed Nov 2, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://osmocom.org/issues/7056 | CISA-ADP | ExploitIssue TrackingTechnical DescriptionVendor |
| https://github.com/osmocom/libosmo-sigtran/commit/b554131f2cbb20ca9a9cf51ca17d73f644eff1f8 | [email protected] | Source CodeVendor |
| https://osmocom.org/issues/7056 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-125 | Out-of-bounds Read | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| libosmo-sigtran | origin/master f2ef799 |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 2, 2026 | CVE Modified | CISA-ADP |
| Oct 26, 2026 | New CVE Received | [email protected] |