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Public proof of conceptFix available

CVE-2026-104598

A public proof of concept exists; no exploitation attested.

  • Published2026-10-26
  • WeaknessCWE-125

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-10-26CVE publishedCNA

Observed activity

isMalicious corpus · updated 2026-11-02 15:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-104598?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-104598?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • libosmo-sigtranUbuntu:26.10all versions · no fixed version listed
  • libosmo-sigtranUbuntu:26.04:LTSall versions · no fixed version listed
  • libosmo-sigtranDebian:14all versions · fixed in 2.3.0-1
  • libosmo-sigtranDebian:13all versions · no fixed version listed

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2026-10-26
Last Modified
2026-11-02
NVD status
Deferred
GitHub Advisory
GHSA-wjvp-f88x-8jqw

Frequently asked questions

What is CVE-2026-104598?

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.

Is CVE-2026-104598 actively exploited?

A proof-of-concept exploit exists for CVE-2026-104598, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2026-104598?

CVE-2026-104598 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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Same product first, then the same vendor advisory and the same publication week.

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Sources for this record