CVE-2022-34643: RISCV ISA Sim commit ac466a21df442c59962589ba296c702631e041b5 implements the incorrect exception priotrity whe

Routine

MEDIUM 5.5MITIGATE

CVE-2022-34643 is a medium-severity flaw (CVSS 5.5) affecting spike risc-v isa simulator. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

RISCV ISA Sim commit ac466a21df442c59962589ba296c702631e041b5 implements the incorrect exception priotrity when accessing memory.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 87%)
CISA exploited list	No
Weakness	CWE-755
Published	2022-07-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: riscv

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

Am I affected?

Timeline

2022-07-18 23:15 UTCPublished CVE record published
2026-06-17 04:50 UTCUpdated Record last modified

riscv spike risc-v isa simulator 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 spike-risc-v-isa-simulator || rpm -q spike-risc-v-isa-simulator || spike-risc-v-isa-simulator --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-2022-34643?

spike risc-v isa simulator: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-34643 being exploited?

CVE-2022-34643 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-2022-34643 affect?

CVE-2022-34643 affects spike risc-v isa simulator. Severity is medium (CVSS 5.5). RISCV ISA Sim commit ac466a21df442c59962589ba296c702631e041b5 implements the incorrect exception priotrity when accessing memory.

How urgent is CVE-2022-34643?

Priority 27/100. Public exploit reference

Related CVEs

CVE-2022-34642 MEDIUM 5.5 MITIGATE The component mcontrol.action in RISCV ISA Sim commit ac466a21df442c59962589ba296c702631e041b5 contains the in

References

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