CVE-2022-34637Public exploit

Service interruption via misclassified address exceptions

Published Jul 18, 2022 · Updated Aug 3, 2024

Improper exception handling in OpenHW Group CVA6 allows local users to interrupt execution through an illegal virtual address. The RTL classifies a noncanonical address used by a load, store, or instruction fetch as an access fault instead of the required page fault, directing execution to a different trap vector. A low-privileged local execution context must issue the malformed memory operation; published evidence establishes control-flow divergence and availability impact, not data disclosure or modification.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper exception handling in OpenHW Group CVA6 allows local users to interrupt execution through an illegal virtual address. The RTL classifies a noncanonical address used by a load, store, or instruction fetch as an access fault instead of the required page fault, directing execution to a different trap vector. A low-privileged local execution context must issue the malformed memory operation; published evidence establishes control-flow divergence and availability impact, not data disclosure or modification.

The record

CVE
CVE-2022-34637
Published
Jul 18, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-755
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 18, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-755Improper Handling of Exceptional Conditions

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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