CVE-2020-12494

🗓️ 16 Jun 2020 14:15:10Reported by [email protected]Type

nvd

nvd🔗 web.nvd.nist.gov👁 26 Views

Beckhoff's TwinCAT RT network driver for Intel 8254x and 8255x lacks padding for non-real-time Ethernet frames, leading to memory disclosure

Reporter	Title	Published	Views	Family All 9
BDU FSTEC	The vulnerability of the network driver of the TwinCAT software for automation and control of technological processes from Beckhoff is related to the ability to disclose information, allowing a perpetrator to uncover protected information.	13 Jan 202300:00	–	bdu_fstec
CVE	CVE-2020-12494	16 Jun 202013:28	–	cve
Cvelist	CVE-2020-12494 Beckhoff: Etherleak in TwinCAT RT network driver	16 Jun 202013:28	–	cvelist
EUVD	EUVD-2020-4796	7 Oct 202500:30	–	euvd
OSV	CVE-2020-12494	16 Jun 202014:15	–	osv
Tenable Nessus	Beckhoff Twincat Exposure of Sensitive Information to an Unauthorized Actor	10 Aug 202100:00	–	nessus
Tenable Nessus	Beckhoff TwinCAT RT Network Driver Incomplete Cleanup (CVE-2020-12494)	7 Feb 202200:00	–	nessus
Prion	Design/Logic Flaw	16 Jun 202014:15	–	prion
RedhatCVE	CVE-2020-12494	22 May 202517:49	–	redhatcve

NVD

Node

AND

beckhoff twincat_driverRange≤3.1.0.3603

beckhoff twincatMatch3.1build_4024

OR

intel 82540emMatch-

intel 82540epMatch-

intel 82541eiMatch-

intel 82541erMatch-

intel 82541giMatch-

intel 82541piMatch-

intel 82544eiMatch-

intel 82544gcMatch-

intel 82545emMatch-

intel 82545gmMatch-

intel 82546ebMatch-

intel 82546gbMatch-

intel 82547eiMatch-

intel 82547giMatch-

Node

AND

beckhoff twincatRange≤3.1.0.3512

beckhoff twincatMatch3.1build_4022

OR

intel 82540emMatch-

intel 82540epMatch-

intel 82541eiMatch-

intel 82541erMatch-

intel 82541giMatch-

intel 82541piMatch-

intel 82544eiMatch-

intel 82544gcMatch-

intel 82545emMatch-

intel 82545gmMatch-

intel 82546ebMatch-

intel 82546gbMatch-

intel 82547ei_Match-

intel 82547giMatch-

Node

AND

beckhoff twincatRange≤2.11.0.2120

beckhoff twincatMatch2.11build_2350

OR

intel 82540emMatch-

intel 82540epMatch-

intel 82541eiMatch-

intel 82541erMatch-

intel 82541giMatch-

intel 82541piMatch-

intel 82544eiMatch-

intel 82544gcMatch-

intel 82545emMatch-

intel 82545gmMatch-

intel 82546ebMatch-

intel 82546gbMatch-

intel 82547ei_Match-

intel 82547giMatch-

Node

AND

beckhoff twincatRange≤3.1.0.3600

beckhoff twincatMatch3.1build_402

OR

intel 82557Match-

intel 82558Match-

intel 82559Match-

Node

AND

beckhoff twincatRange≤3.1.0.3500

beckhoff twincatMatch3.1build_4024

OR

intel 82557Match-

intel 82558Match-

intel 82559Match-

Node

AND

beckhoff twincatRange≤2.11.0.2117

beckhoff twincatMatch2.11build_2350

OR

intel 82557Match-

intel 82558Match-

intel 82559Match-

Source	Link
cert	www.cert.vde.com/en-us/advisories/vde-2020-019

17 Jun 2026 02:51Current

CVSS 25

CVSS 3.15.3

EPSS0.01014

beckhoff twincat intel 8254x intel 8255x ethercat real-time features ethernet frames memory disclosure icmp echo