Vulnerability · Published Sep 28, 2026 · Assigned by VulDB

CVE-2026-100892aligungr UERANSIM nr-gnb handler.cpp ULInformationTransfer memory corruption

Medium 5.3

In plain English

A medium-severity memory corruption in UERANSIM from aligungr. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.4%top 68.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was found in aligungr UERANSIM up to 3.3.0. This affects the function ULInformationTransfer of the file src/gnb/rrc/handler.cpp of the component nr-gnb. Performing a manipulation of the argument dedicatedNASMessage results in memory corruption. The attack can be initiated remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products (as reported)

Vendor	Product	Versions
aligungr	UERANSIM	3.03.13.23.3.0

Weakness: CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:C

References

VDB-410842 | aligungr UERANSIM nr-gnb handler.cpp ULInformationTransfer memory corruption vdb-entry, technical-description
VDB-410842 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
CVE-2026-100892 | CVE Analysis and Report third-party-advisory
Submit #917313 | UERAMSIM UERANSIM nr-gnb <=3.3.0 Denial-of-Servic third-party-advisory
https://gist.github.com/centauruszzz/c69a6bd152f45d9ca8db981f7da34bed exploit