CVE-2020-13238
Mitsubishi MELSEC iQ-R Series PLCs with firmware 33 allow attackers to halt the industrial...
Mitsubishi MELSEC iQ-R Series PLCs with firmware 33 allow attackers to halt the industrial process by sending an unauthenticated crafted packet over the network, because this denial of service attack consumes excessive CPU time. After halting, physical access to the PLC is required in order to restore production.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
Mitsubishi MELSEC iQ-R Series PLCs with firmware 33 allow attackers to halt the industrial process by sending an unauthenticated crafted packet over the network, because this denial of service attack consumes excessive CPU time. After halting, physical access to the PLC is required in order to restore production.
- Record
CVE-2020-13238- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 7.8 High
AV:N/AC:L/Au:N/C:N/I:N/A:C - Weakness
- CWE-400
- Updated
- 2026-11-02
CVE List No score
Mitsubishi MELSEC iQ-R Series PLCs with firmware 33 allow attackers to halt the industrial process by sending an unauthenticated crafted packet over the network, because this denial of service attack consumes excessive CPU time. After halting, physical access to the PLC is required in order to restore production.
- Record
CVE-2020-13238- Updated
- 2026-11-02
EUVDEUVD-2020-5507 No score
Mitsubishi MELSEC iQ-R Series PLCs with firmware 33 allow attackers to halt the industrial process by sending an unauthenticated crafted packet over the network, because this denial of service attack consumes excessive CPU time. After halting, physical access to the PLC is required in order to restore production.
- Record
EUVD-2020-5507- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-96m8-jhp6-v772 No score
Mitsubishi MELSEC iQ-R Series PLCs with firmware 33 allow attackers to halt the industrial...
Mitsubishi MELSEC iQ-R Series PLCs with firmware 33 allow attackers to halt the industrial process by sending an unauthenticated crafted packet over the network, because this denial of service attack consumes excessive CPU time. After halting, physical access to the PLC is required in order to restore production.
- Record
GHSA-96m8-jhp6-v772- Updated
- 2026-11-02
Affected products
- mitsubishielectric melsec iq-r00cpu firmware
- mitsubishielectric melsec iq-r01cpu firmware
- mitsubishielectric melsec iq-r02cpu firmware
- mitsubishielectric melsec iq-r04cpu firmware
- mitsubishielectric melsec iq-r08cpu firmware
- mitsubishielectric melsec iq-r08fcpu firmware
- mitsubishielectric melsec iq-r08pcpu firmware
- mitsubishielectric melsec iq-r08sfcpu firmware
- mitsubishielectric melsec iq-r120cpu firmware
- mitsubishielectric melsec iq-r120fcpu firmware
- mitsubishielectric melsec iq-r120pcpu firmware
- mitsubishielectric melsec iq-r120sfcpu firmware
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- mitsubishielectric melsec iq-r16cpu firmware
- mitsubishielectric melsec iq-r16fcpu firmware
- mitsubishielectric melsec iq-r16pcpu firmware
- mitsubishielectric melsec iq-r16sfcpu firmware
- mitsubishielectric melsec iq-r32cpu firmware
- mitsubishielectric melsec iq-r32fcpu firmware
- mitsubishielectric melsec iq-r32pcpu firmware
- mitsubishielectric melsec iq-r32sfcpu firmware
- mitsubishielectric melsec iq-rj71en71 firmware
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-13238 is a high vulnerability (CVSS 7.5) in Mitsubishielectric Melsec Iq-r00cpu Firmware, published June 10, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.42%, the 88th percentile. No source names a fixed version.