CVE-2022-33021: CVA6 commit 909d85a accesses invalid memory when reading the value of MHPMCOUNTER30.

This week

HIGH 7.5REMOTEMITIGATE

CVE-2022-33021 is a high-severity flaw (CVSS 7.5) affecting cva6. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

CVA6 commit 909d85a accesses invalid memory when reading the value of MHPMCOUNTER30.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.1% (top 34%)
CISA exploited list	No
Weakness	CWE-125
Published	2022-06-29
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: openhwgroup

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-06-29 12:15 UTCPublished CVE record published
2026-06-17 04:48 UTCUpdated Record last modified

openhwgroup cva6 MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy cva6 || rpm -q cva6 || cva6 --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-33021?

cva6: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-33021 being exploited?

CVE-2022-33021 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-33021 affect?

CVE-2022-33021 affects cva6. Severity is high (CVSS 7.5). CVA6 commit 909d85a accesses invalid memory when reading the value of MHPMCOUNTER30.

How urgent is CVE-2022-33021?

Priority 53/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

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References

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