How severe is CVE-2026-5165?

CVE-2026-5165 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-5165 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-5165?

CVE-2026-5165 primarily affects Redhat Virtio-win. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-5165?

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

Does CVE-2026-5165 have an EU (EUVD) identifier?

Yes. CVE-2026-5165 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17113.

When was CVE-2026-5165 published?

CVE-2026-5165 was published on 2026-03-30 and last updated on 2026-06-17.

CVE-2026-5165

CVE-2026-5165 is a medium-severity vulnerability in Redhat Virtio-win with a CVSS 3.x base score of 6.7. 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-825.

Key facts

Severity: Medium (CVSS 3.x base score 6.7)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-17113
Weakness: CWE-825
Affected product: Redhat Virtio-win
Published: 2026-03-30
Last modified: 2026-06-17

Description

A flaw was found in virtio-win, specifically within the VirtIO Block (BLK) device. When the device undergoes a reset, it fails to properly manage memory, resulting in a use-after-free vulnerability. This issue could allow a local attacker to corrupt system memory, potentially leading to system instability or unexpected behavior.

Frequently asked questions

What is CVE-2026-5165?: A flaw was found in virtio-win, specifically within the VirtIO Block (BLK) device. When the device undergoes a reset, it fails to properly manage memory, resulting in a use-after-free vulnerability. This issue could allow a local attacker to corrupt system memory, potentially leading to system instability or unexpected behavior.
How severe is CVE-2026-5165?: CVE-2026-5165 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-5165 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-5165?: CVE-2026-5165 primarily affects Redhat Virtio-win. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-5165?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-5165 have an EU (EUVD) identifier?: Yes. CVE-2026-5165 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17113.
When was CVE-2026-5165 published?: CVE-2026-5165 was published on 2026-03-30 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:redhat:virtio-win:-:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*

More vulnerabilities in Redhat Virtio-win

CVE-2015-3215 — High (CVSS 7.5): The NetKVM Windows Virtio driver allows remote attackers to cause a denial of service (guest crash) via a crafted…
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