CVE-2026-101035 aligungr CVE debrief

Who should care

Defenders responsible for systems using aligungr UERANSIM up to 3.3.0 should assess exposure and prioritize patching. Defenders should prioritize patching affected systems to prevent potential issues. The vulnerability can be exploited remotely, leading to an uncaught exception. Exposure assessment and monitoring for potential exploitation attempts are crucial.

Why it matters

Defenders should prioritize patching affected systems to prevent potential issues. The vulnerability can be exploited remotely, leading to an uncaught exception. Exposure assessment and monitoring for potential exploitation attempts are crucial.

• Verify patch application to prevent potential issues
• Monitor for potential exploitation attempts
• Assess exposure of affected systems

Technical summary

The vulnerability is located in the DecodePlainMmMessage function in src/lib/nas/encode.cpp of the nr-gnb component in aligungr UERANSIM up to 3.3.0. It can be exploited remotely, leading to an uncaught exception. The patch (1ae9bf2062b57595dbcbc4bc1d0a0ccf06815bac) is available to resolve this issue. Defenders should prioritize patching affected systems to prevent potential issues. The vulnerability can be exploited remotely, leading to an uncaught exception. Exposure assessment and monitoring for potential exploitation attempts are crucial.

Defensive priority

Defenders should prioritize patching affected systems.

Recommended defensive actions

• Apply the patch (1ae9bf2062b57595dbcbc4bc1d0a0ccf06815bac) to resolve the issue
• Review and update affected systems
• Monitor for potential exploitation attempts
• Verify patch application to prevent potential issues
• Assess exposure of affected systems
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• Review compensating controls for exposed systems while remediation is scheduled and verified.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability and available patch. The vulnerability affects aligungr UERANSIM up to 3.3.0 and can be exploited remotely. The patch (1ae9bf2062b57595dbcbc4bc1d0a0ccf06815bac) is available to resolve this issue. Defenders should verify patch application and monitor for potential exploitation attempts.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.