How severe is CVE-2018-18068?

CVE-2018-18068 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-18068 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-18068?

CVE-2018-18068 affects Raspberrypi Raspberry Pi 3 Model B+ Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-18068?

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

When was CVE-2018-18068 published?

CVE-2018-18068 was published on 2019-04-04 and last updated on 2026-06-17.

CVE-2018-18068

CVE-2018-18068 is a critical-severity vulnerability in Raspberrypi Raspberry Pi 3 Model B+ Firmware with a CVSS 3.x base score of 9.8. 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-668.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-668
Affected product: Raspberrypi Raspberry Pi 3 Model B+ Firmware
Published: 2019-04-04
Last modified: 2026-06-17

Description

The ARM-based hardware debugging feature on Raspberry Pi 3 module B+ and possibly other devices allows non-secure EL1 code to read/write any EL3 (the highest privilege level in ARMv8) memory/register via inter-processor debugging. With a debug host processor A running in non-secure EL1 and a debug target processor B running in any privilege level, the debugging feature allows A to halt B and promote B to any privilege level. As a debug host, A has full control of B even if B owns a higher privilege level than A. Accordingly, A can read/write any EL3 memory/register via B. Also, with this memory access, A can execute arbitrary code in EL3.

Frequently asked questions

What is CVE-2018-18068?: The ARM-based hardware debugging feature on Raspberry Pi 3 module B+ and possibly other devices allows non-secure EL1 code to read/write any EL3 (the highest privilege level in ARMv8) memory/register via inter-processor debugging. With a debug host processor A running in non-secure EL1 and a debug target processor B running in any privilege level, the debugging feature allows A to halt B and promote B to any privilege level. As a debug host, A has full control of B even if B owns a higher privilege level than A. Accordingly, A can read/write any EL3 memory/register via B. Also, with this memory access, A can execute arbitrary code in EL3.
How severe is CVE-2018-18068?: CVE-2018-18068 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-18068 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-18068?: CVE-2018-18068 affects Raspberrypi Raspberry Pi 3 Model B+ Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-18068?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2018-18068 published?: CVE-2018-18068 was published on 2019-04-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:raspberrypi:raspberry_pi_3_model_b\+_firmware:-:*:*:*:*:*:*:*

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