aligungr UERANSIM up to 3.2.7 Radio Link Simulation Layer src/lib/rls/rls_pdu.cpp rls::DecodeRlsMessage pduLength uncaught exception

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in aligungr UERANSIM up to 3.2.7. The impacted element is the function rls::DecodeRlsMessage in the library src/lib/rls/rls_pdu.cpp of the component Radio Link Simulation Layer. The manipulation of the argument pduLength results in uncaught exception. This vulnerability is cataloged as CVE-2026-7183. The attack may be launched remotely. Furthermore, there is an exploit available. Upgrading the affected component is recommended. This behavior is related to CVE-2024-37877. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

Detailsinfo

A vulnerability classified as critical has been found in aligungr UERANSIM up to 3.2.7. Affected is the function rls::DecodeRlsMessage in the library src/lib/rls/rls_pdu.cpp of the component Radio Link Simulation Layer. The manipulation of the argument pduLength with an unknown input leads to a uncaught exception vulnerability. CWE is classifying the issue as CWE-248. An exception is thrown from a function, but it is not caught. This is going to have an impact on availability.

This vulnerability is traded as CVE-2026-7183. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details and a exploit are known.

It is declared as proof-of-concept. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product. This behavior is related to CVE-2024-37877.

Upgrading to version 3.2.8 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch ca1a66fffe282767bb08618af9f848e3b68ea47b is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-25933). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Uncaught exception
CWE: CWE-248
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Proof-of-Concept

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: UERANSIM 3.2.8
Patch: ca1a66fffe282767bb08618af9f848e3b68ea47b

Timelineinfo

04/27/2026 Advisory disclosed
04/27/2026 +0 days VulDB entry created
04/28/2026 +1 days VulDB entry last update

Sourcesinfo

Product: github.com

Status: Confirmed

CVE: CVE-2026-7183 (🔒)
GCVE (CVE): GCVE-0-2026-7183
GCVE (VulDB): GCVE-100-359784
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/27/2026 12:01
Updated: 04/28/2026 03:18
Changes: 04/27/2026 12:01 (61), 04/28/2026 03:18 (1)
Complete: 🔍
Submitter: 0wln3d
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #800026: UERANSIM 3.2.7 DoS via Malformed RLS Packet (CWE-248) (by 0wln3d)

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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