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UK Cyber Defence
VulnerabilityModified

CVE-2019-13921

A vulnerability has been identified in SIMATIC WinAC RTX (F) 2010 (All versions < SP3 Update 1).

HIGH 7.5EPSS 1.37%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.37%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

A vulnerability has been identified in SIMATIC WinAC RTX (F) 2010 (All versions < SP3 Update 1). Affected versions of the software contain a vulnerability that could allow an unauthenticated attacker to trigger a denial-of-service condition. The vulnerability can be triggered if a large HTTP request is sent to the executing service. The security vulnerability could be exploited by an attacker with network access to the affected systems. Successful exploitation requires no system privileges and no user interaction. An attacker could use the vulnerability to compromise availability of the service provided by the software.

CVSS 3.1
7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
1.37% probability · 72th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-410, CWE-400
Affected
siemens/simatic winac rtx \(f\) 2010
Source
productcert@siemens.com
EPSS trend
0%3%5%27 October 2026: 1.37%27 October 202627 October 2026

EPSS 1.4% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.