CVE-2018-10731

highpriority · track · 37EPSS 0.026 · 86 %ileDEEURUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
2.65% (86th) EPSS
CVSS 9.3 · high
Is it mine?
122 products
Check your exposure
Who says so?
5 sources
cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · scored 2026-10-27

All Phoenix Contact managed FL SWITCH 3xxx, 4xxx, 48xx products running firmware version 1.0 to 1.33 are prone to buffer overflows when handling very large cookies (a different vulnerability than CVE-2018-10728).

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

  • Fixedphoenix_contact_psirt

    Customers using Phoenix Contact managed FL SWITCH devices with affected firmware versions are recommended to update the firmware to version 1.34 or higher which fixes this vulnerability. The updated firmware may be downloaded from the managed switch product page on the Phoenix Contact website.

  • MitigationAll FL SWITCH 3xxx 4xxx and 48xxx Series products running firmwarecisa_csaf_ot

    FL SWITCH 3005

    http://www.phoenixcontact.net/qr/2891030/firmware_update
02

cvss

Technical severity, 0–10. One row per scoring source.

9.3
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 8.2–9.3

v2.09.3highAV:N/AC:M/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 8.6 · impact 10
v3.09criticalCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.2 · impact 6
v3.09criticalCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · CISA US
v3.09criticalCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · Phoenix Contact PSIRT DE
v3.08.2highCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
v3.19criticalAV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119USprimaryCWE-119USCWE-121USCWE-121US
04

affected products (122)

Products and version ranges known to be affected.

showing 20 of 122
05

advisories (2)

Vendor and ecosystem advisories describing this.

  • VDE-2018-007Phoenix Contact: FL SWITCH 3xxx/4xxx/48xx series - Stack-based Buffer Overflow in shared object file2018-05-16csaf · phoenix_contact_psirtDE

    An attacker may exploit a 'long cookie' related vulnerability to cause a buffer overflow that allows unauthorized access to the switches operating system files. The attacker can then insert executable code into the OS.

  • ICSA-18-137-02PHOENIX CONTACT FL SWITCH 3xxx/4xxx/48xx Series2018-05-17icsa · cisa_csaf_otUS

    Successful exploitation of these vulnerabilities could allow for remote code execution and information disclosure.

06

also known as (6)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bducisa_csaf_otphoenix_contact_psirtNVDCVE.orgMITRE
published 2018-05-17modified 2026-06-17
09

references (8)

External citations — patches, advisories, analysis.

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