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Fencer Intel
high 7.5

CVE-2026-104598 json

libosmo-sigtran through 2.2.1 contains an out-of-bounds read in the M3UA NOTIFY decoder in src/m3ua.c.

published 15d ago modified 7d ago also EUVD-2026-110095

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 33%
public exploits
0
none known

Summary

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.

Patch / fix

  • libosmo-sigtran Debian 14 2.3.0-1

debian advisories DEBIAN-CVE-2026-104598

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-104598 updated cvss 5.3

libosmo-sigtran: libosmo-sigtran: Information disclosure via out-of-bounds read in M3UA NOTIFY decoder

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
7d ago

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • osmocom.org https://osmocom.org/issues/7056 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.