How severe is CVE-2019-6535?

CVE-2019-6535 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2019-6535 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-6535?

CVE-2019-6535 primarily affects Mitsubishielectric Q03udvcpu Firmware. In total, 18 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-6535?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-6535 published?

CVE-2019-6535 was published on 2019-02-05 and last updated on 2026-06-17.

CVE-2019-6535

CVE-2019-6535 is a high-severity vulnerability in Mitsubishielectric Q03udvcpu Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-400.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Mitsubishielectric Q03udvcpu Firmware
Published: 2019-02-05
Last modified: 2026-06-17

Description

Mitsubishi Electric Q03/04/06/13/26UDVCPU: serial number 20081 and prior, Q04/06/13/26UDPVCPU: serial number 20081 and prior, and Q03UDECPU, Q04/06/10/13/20/26/50/100UDEHCPU: serial number 20101 and prior. A remote attacker can send specific bytes over Port 5007 that will result in an Ethernet stack crash and disruption to USB communication.

Frequently asked questions

What is CVE-2019-6535?: Mitsubishi Electric Q03/04/06/13/26UDVCPU: serial number 20081 and prior, Q04/06/13/26UDPVCPU: serial number 20081 and prior, and Q03UDECPU, Q04/06/10/13/20/26/50/100UDEHCPU: serial number 20101 and prior. A remote attacker can send specific bytes over Port 5007 that will result in an Ethernet stack crash and disruption to USB communication.
How severe is CVE-2019-6535?: CVE-2019-6535 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2019-6535 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-6535?: CVE-2019-6535 primarily affects Mitsubishielectric Q03udvcpu Firmware. In total, 18 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-6535?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-6535 published?: CVE-2019-6535 was published on 2019-02-05 and last updated on 2026-06-17.

References

Affected products (18)

cpe:2.3:o:mitsubishielectric:q03udvcpu_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:q04udvcpu_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:q06udvcpu_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:q13udvcpu_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:q26udvcpu_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:q04udpvcpu_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:q06udpvcpu_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:q13udpvcpu_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:q26udpvcpu_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:q03udecpu_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:q04udehcpu_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:q06udehcpu_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:q10udehcpu_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:q13udehcpu_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:q20udehcpu_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:q26udehcpu_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:q50udehcpu_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:q100udehcpu_firmware:*:*:*:*:*:*:*:*

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