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Vulnerability record · CVE-2018-19878 · published 19 June 2019

CVE-2018-19878: Teltonika rut950 firmware use after free vulnerability

TTeltonika · Rut950 Firmware

An issue was discovered on Teltonika RTU950 R_31.04.89 devices. The application allows a user to login without limitation. For every successful login request, the application saves a session. A user can re-login without logging out, causing the application to store the session in memory. Exploitation of this vulnerability will increase memory use and consume free space.

6.5 CVSS 3.0 Medium EPSS 1.2% · top 33.3% CWE-416 · Use after free
6.5CVSS 3.0 base score, v2 6.8
1.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

An issue was discovered on Teltonika RTU950 R_31.04.89 devices. The application allows a user to login without limitation. For every successful login request, the application saves a session. A user can re-login without logging out, causing the application to store the session in memory. Exploitation of this vulnerability will increase memory use and consume free space.

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.triadsec.com/ Not Applicable
https://www.triadsec.com/CVE-2018-19878.pdf Broken Link
https://www.triadsec.com/ Not Applicable
https://www.triadsec.com/CVE-2018-19878.pdf Broken Link

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2018-19879Teltonika rut950 firmware improper restriction of authentication attempts vulnerabilityAn issue was discovered in /cgi-bin/luci on Teltonika RTU9XX (e.g., RUT950) R_31.04.89 before R_00.05.00.5 devices. The authentication functionality …EPSS 1.3%9.8CVE-2018-17532Teltonika RUT9XX routers unauthenticated OS command injectionTeltonika RUT9XX routers running firmware before 00.04.233 fail to sanitize user input in autologin.cgi and hotspotlogin.cgi, allowing OS command inj…EPSS 71%analysed9.8CVE-2017-8116Teltonika rut900 firmware os command injection vulnerabilityThe management interface for the Teltonika RUT9XX routers (aka LuCI) with firmware 00.03.265 and earlier allows remote attackers to execute arbitrary…EPSS 4.5%6.8CVE-2018-17534Teltonika rut900 firmware improper authentication vulnerabilityTeltonika RUT9XX routers with firmware before 00.04.233 provide a root terminal on a serial interface without proper access control. This allows atta…EPSS 0.72%6.1CVE-2018-17533Teltonika rut900 firmware cross-site scripting vulnerabilityTeltonika RUT9XX routers with firmware before 00.05.01.1 are prone to cross-site scripting vulnerabilities in hotspotlogin.cgi due to insufficient us…EPSS 2.0%7.0CVE-2026-68820Windows Ancillary Function Driver for WinSock use-after-free privilege escalationThe Windows Ancillary Function Driver for WinSock (afd.sys) contains a use-after-free (CWE-416) that lets an authorized local attacker elevate privil…KEVEPSS 0.33%analysed8.8CVE-2010-0806Microsoft Internet Explorer Peer Objects use-after-free allows remote code executionInternet Explorer 6, 6 SP1 and 7 contain a use-after-free in the Peer Objects component (iepeers.dll), where an object is accessed after deletion, le…KEVEPSS 82%analysed8.8CVE-2010-0249Microsoft Internet Explorer use-after-free enables remote code executionInternet Explorer 6, 7 and 8 mishandle objects in memory, leaving a dangling pointer that can be reused after the object is freed. A remote attacker …KEVEPSS 92%analysed

Source: NIST National Vulnerability Database (record CVE-2018-19878), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.