How severe is CVE-2021-41612?

CVE-2021-41612 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-41612 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-41612?

CVE-2021-41612 affects Openrisc Mor1kx Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-41612?

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-2021-41612 published?

CVE-2021-41612 was published on 2023-04-18 and last updated on 2026-06-17.

CVE-2021-41612

CVE-2021-41612 is a high-severity vulnerability in Openrisc Mor1kx Firmware with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Openrisc Mor1kx Firmware
Published: 2023-04-18
Last modified: 2026-06-17

Description

An issue was discovered in the ALU unit of the OpenRISC mor1kx processor. The carry flag is not being updated correctly for the subtract instruction, which results in an incorrect value of the carry flag. Any software that relies on this flag may experience corruption in execution.

Frequently asked questions

What is CVE-2021-41612?: An issue was discovered in the ALU unit of the OpenRISC mor1kx processor. The carry flag is not being updated correctly for the subtract instruction, which results in an incorrect value of the carry flag. Any software that relies on this flag may experience corruption in execution.
How severe is CVE-2021-41612?: CVE-2021-41612 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-41612 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-41612?: CVE-2021-41612 affects Openrisc Mor1kx Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-41612?: 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-2021-41612 published?: CVE-2021-41612 was published on 2023-04-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:openrisc:mor1kx_firmware:*:*:*:*:*:*:*:*

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