CVE-2026-82590: Reachable Assertion in Open5GS
Description
CVE-2026-82590 is a medium severity vulnerability in Open5GS up to version 2.7.7. It involves a reachable assertion in the SMF component's function smf_nudm_sdm_handle_get triggered by manipulation of the preemptCap argument. The issue can be exploited remotely. Upgrading to Open5GS version 2.8.0 addresses this vulnerability.
CVSS v4.0
Score 5.3medium
Affected software
Open5GS
cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects Open5GS versions 2.7.0 through 2.7.7 in the SMF component, specifically in the function smf_nudm_sdm_handle_get within src/smf/nudm-handler.c. An attacker can remotely manipulate the preemptCap argument to cause a reachable assertion, potentially leading to a denial of service or other impacts related to assertion failure. The issue is resolved by upgrading to version 2.8.0, which includes the patch identified by commit 4554405f29bffd7562abedbee63484825bd90cd5.
Potential Impact
The vulnerability allows remote attackers to trigger a reachable assertion in the SMF component of Open5GS, which may cause the affected process to terminate unexpectedly or behave incorrectly. This can disrupt the normal operation of the affected network function. The CVSS 4.0 base score is 5.3, indicating a medium severity impact with network attack vector, low complexity, no privileges required, and no user interaction needed.
Mitigation Recommendations
Upgrade Open5GS to version 2.8.0 or later, which contains the official fix for this vulnerability. No other mitigation or temporary workaround is indicated. Patch status is confirmed by the vendor advisory stating that upgrading to 2.8.0 is sufficient.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-08-30T06:09:55.417Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a94b0b3acd9273b49193687
Added to database: 08/30/2026, 22:37:39 UTC
Last enriched: 09/07/2026, 15:16:24 UTC
Last updated: 10/14/2026, 18:48:24 UTC
Views: 93
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