Detections
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Trane Tracer SC, Tracer SC+, and Tracer Concierge Memory Allocation with Excessive Size Value (CVE-2026-28253)

high Tenable OT Security Plugin ID 505313

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A Memory Allocation with Excessive Size Value vulnerability in Trane Tracer SC, Tracer SC+, and Tracer Concierge could allow an unauthenticated attacker to cause a denial-of-service condition

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original can be found at CISA.gov.

See Also

https://www.cisa.gov/news-events/ics-advisories/icsa-26-071-01

Plugin Details

Severity: High

ID: 505313

File Name: tenable_ot_trane_CVE-2026-28253.nasl

Version: 1.3

Type: Remote

Family: Tenable.ot

Published: 4/7/2026

Updated: 4/8/2026

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-28253

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 6.6

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/o:trane:tracer_sc%2b_firmware, cpe:/o:trane:tracer_sc_firmware

Required KB Items: Tenable.ot/Trane

Exploit Ease: No known exploits are available

Patch Publication Date: 3/12/2026

Vulnerability Publication Date: 3/12/2026

Reference Information

CVE: CVE-2026-28253

CWE: 789

ICSA: 26-071-01