CVE-2019-5178

mediumPriorität · verfolgen · 31EPSS 0.007 · 51. PerzentilDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.66% (51st) EPSS

CVSS 4.6 · medium

Is it mine?

7 products

Prüfe deine Angriffsfläche

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · wago_psirt

EPSS · bewertet 2026-10-27

An exploitable stack buffer overflow vulnerability vulnerability exists in the iocheckd service ‘I/O-Check’ functionality of WAGO PFC 200 Firmware version 03.02.02(14). An attacker can send a specially crafted packet to trigger the parsing of this cache file. The destination buffer sp+0x440 is overflowed with the call to sprintf() for any hostname values that are greater than 1024-len(‘/etc/config-tools/change_hostname hostname=‘) in length. A hostname value of length 0x3fd will cause the service to crash.

Behebungen

Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.

Ein Hersteller-Fix ist verfügbar.

Behobenwago_psirt
The I/O-Check service protocol is only needed during installation and commissioning, not during normal operations. It is highly recommended to disable the I/O-Check service after commissioning. This is the easiest and securest way to protect your device from the listed vulnerabilities. Regardless of the action described above, the vulnerabilities are expected to be fixed in FW16 Release in Q2/2020.
Mitigationwago_psirt
* Disable I/O-Check service. * Restrict network access to the device. * Do not directly connect the device to the internet. * Disable unused TCP/UDP-ports.

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

7.8

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 4.6–7.8

v2.04.6mediumAV:L/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USAusnutzbarkeit 3.9 · Auswirkung 6.4

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USAusnutzbarkeit 1.8 · Auswirkung 5.9

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · WAGO PSIRT DE

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-787USprimärCWE-787US

betroffene Produkte (7)

Betroffene Produkte und Versionsbereiche.

WAGO WAGO PFC200≤ Firmware version 03.02.02(14)enisa_euvdEU
wago pfc200 firmware= 03.02.02(14)nvdUScpe:2.3:o:wago:pfc200_firmware:*:*:*:*:*:*:*:*
Firmware <FW16 installed on Hardware 750-81xx/xxx-xxx (PFC100)alle Versionenwago_psirtDE
Firmware <FW16 installed on Hardware 750-82xx/xxx-xxx (PFC200)alle Versionenwago_psirtDE
Firmware <FW16 installed on Hardware 762-4xxxalle Versionenwago_psirtDE
Firmware <FW16 installed on Hardware 762-6xxxalle Versionenwago_psirtDE
Firmware <FW16 installed on Pepperl+Fuchs Hardware 762-5xxxalle Versionenwago_psirtDE

Advisories (1)

Hersteller- und Ökosystem-Meldungen dazu.

VDE-2020-011WAGO: Multiple Vulnerabilities in I/O-Check Service2020-03-09csaf · wago_psirtDE
An attacker needs an authorized login on the device in order to exploit the herein mentioned vulnerabilities. The reported vulnerabilities allow a local attacker with valid login credentials who is able to create files on the device to change the devices settings, e.g. default gateway address, time server etc. and potentially execute code.

auch bekannt als (3)

Weitere Namen und Kennungen dieser Entität.

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvd enisa_euvd nvd wago_psirt NVD CVE.org MITRE

veröffentlicht 2020-03-12geändert 2026-06-17

verwandt (16,129)

Verwandte Einträge.

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CVE-2026-53362US	—OT kritisch	0.71% (53rd)	KEV	2026-07-04
In the Linux kernel, the following vulnerability has been resolved: ipv6: account for fraggap on the paged allocation path In __ip6_append_data(), when the paged-allocation branc…
CVE-2026-53266US	—OT kritisch	0.93% (61st)	KEV	2026-06-25
In the Linux kernel, the following vulnerability has been resolved: netfilter: bridge: make ebt_snat ARP rewrite writable The ebtables SNAT target keeps the Ethernet source addre…
CVE-2026-11645US	—OT kritisch	2.44% (84th)	KEV	2026-06-09
Out of bounds read and write in V8 in Google Chrome prior to 149.0.7827.103 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium…

+16124 weitere

Referenzen (4)

Externe Belege — Patches, Meldungen, Analysen.

https://nvd.nist.gov/vuln/detail/CVE-2019-5178 cnnvd
https://talosintelligence.com/vulnerability_reports/TALOS-2019-0963 cnnvd
https://talosintelligence.com/vulnerability_reports/TALOS-2019-0963 enisa_euvd
https://talosintelligence.com/vulnerability_reports/TALOS-2019-0963ExploitTechnical DescriptionThird Party Advisorynvd

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