CVE-2026-104591: libosmocore through 1.14.1 contains a buffer overflow in osmo_iuup_compute_payload_crc() in
Affects libosmocoreSource GCVE Database
Not known to be exploited : patch libosmocore soon.
Data as of 28 Oct 2026, 22:31 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
Exploitation evidence
Disclosed: evidence found.
CVE published 26 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Patches and advisories
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10libosmocorepkg:deb/ubuntu/libosmocore?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlibosmocorepkg:deb/ubuntu/libosmocore?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSlibosmocorepkg:deb/ubuntu/libosmocore?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 22.04 LTSlibosmocorepkg:deb/ubuntu/libosmocore?arch=source&distro=jammyOther threats | Affected
| Fixed in– |
Ubuntu 20.04 LTSlibosmocorepkg:deb/ubuntu/libosmocore?arch=source&distro=focalOther threats | Affected
| Fixed in– |
Ubuntu 18.04 LTSlibosmocorepkg:deb/ubuntu/libosmocore?arch=source&distro=bionicOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
libosmocore through 1.14.1 contains a buffer overflow in osmo_iuup_compute_payload_crc() in src/gsm/iuup.c. This allows a remote attacker to cause a denial of service.
References
- ubuntu.com/security/CVE-2026-104591 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-104591 (opens in a new tab)
- github.com/cveproject/cvelistv5/tree/main/cves/2026/104xxx/cve-2026-104591.json (opens in a new tab)
- github.com/osmocom/libosmocore/commit/0b0f165106b7918435a47f8cb28c651228b8e4aa (opens in a new tab)
- nvd.nist.gov/vuln/detail/cve-2026-104591 (opens in a new tab)
- osmocom.org/issues/7052 (opens in a new tab)
- security-tracker.debian.org/tracker/cve-2026-104591 (opens in a new tab)