How severe is CVE-2022-36661?

CVE-2022-36661 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2022-36661 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-36661?

CVE-2022-36661 affects Xhyve Project Xhyve. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-36661?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2022-36661 published?

CVE-2022-36661 was published on 2022-09-07 and last updated on 2026-06-17.

CVE-2022-36661

CVE-2022-36661 is a medium-severity vulnerability in Xhyve Project Xhyve with a CVSS 3.x base score of 6.5. 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-476.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Xhyve Project Xhyve
Published: 2022-09-07
Last modified: 2026-06-17

Description

xhyve commit dfbe09b was discovered to contain a NULL pointer dereference via the component vi_pci_read(). This vulnerability allows attackers to cause a Denial of Service via unspecified vectors.

Frequently asked questions

What is CVE-2022-36661?: xhyve commit dfbe09b was discovered to contain a NULL pointer dereference via the component vi_pci_read(). This vulnerability allows attackers to cause a Denial of Service via unspecified vectors.
How severe is CVE-2022-36661?: CVE-2022-36661 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2022-36661 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-36661?: CVE-2022-36661 affects Xhyve Project Xhyve. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-36661?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-36661 published?: CVE-2022-36661 was published on 2022-09-07 and last updated on 2026-06-17.

References

https://awxylitol.github.io/2022/07/21/disclose-three-bugs-in-xhyve.html

Affected products (1)

cpe:2.3:a:xhyve_project:xhyve:2021-10-02:*:*:*:*:*:*:*

More vulnerabilities in Xhyve Project Xhyve

CVE-2022-36660 — Critical (CVSS 9.8): xhyve commit dfbe09b was discovered to contain a stack buffer overflow via the component pci_vtrnd_notify().
CVE-2022-35867 — Medium (CVSS 6.7): This vulnerability allows local attackers to escalate privileges on affected installations of xhyve. An attacker must…
CVE-2022-36659 — Medium (CVSS 6.5): xhyve commit dfbe09b was discovered to contain a NULL pointer dereference via the component vi_pci_write(). This…

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