How severe is CVE-2017-2635?

CVE-2017-2635 has a CVSS 3.x base score of 7.7, rated high 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-2017-2635 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-2635?

CVE-2017-2635 affects Redhat Libvirt. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-2635?

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-2017-2635 published?

CVE-2017-2635 was published on 2018-08-22 and last updated on 2026-06-17.

CVE-2017-2635

CVE-2017-2635 is a high-severity vulnerability in Redhat Libvirt with a CVSS 3.x base score of 7.7. 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: High (CVSS 3.x base score 7.7)
CVSS v2: 4.0
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Redhat Libvirt
Published: 2018-08-22
Last modified: 2026-06-17

Description

A NULL pointer deference flaw was found in the way libvirt from 2.5.0 to 3.0.0 handled empty drives. A remote authenticated attacker could use this flaw to crash libvirtd daemon resulting in denial of service.

Frequently asked questions

What is CVE-2017-2635?: A NULL pointer deference flaw was found in the way libvirt from 2.5.0 to 3.0.0 handled empty drives. A remote authenticated attacker could use this flaw to crash libvirtd daemon resulting in denial of service.
How severe is CVE-2017-2635?: CVE-2017-2635 has a CVSS 3.x base score of 7.7, rated high 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-2017-2635 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-2635?: CVE-2017-2635 affects Redhat Libvirt. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-2635?: 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-2017-2635 published?: CVE-2017-2635 was published on 2018-08-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:redhat:libvirt:*:*:*:*:*:*:*:*

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