What’s Vulnerable › Vulnerabilities

CVE-2020-35517

• Severity: high (CVSS 8.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-01-28 · updated 2026-06-17
• Weakness: CWE-269

Description

A flaw was found in qemu. A host privilege escalation issue was found in the virtio-fs shared file system daemon where a privileged guest user is able to create a device special file in the shared directory and use it to r/w access host devices.

Affected products

• QEMU: from 5.0.0 through 5.2.50

References

• https://bugzilla.redhat.com/show_bug.cgi?id=1915823
• https://github.com/qemu/qemu/commit/ebf101955ce8f8d72fba103b5151115a4335de2c
• https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg05461.html
• https://security.gentoo.org/glsa/202208-27
• https://security.netapp.com/advisory/ntap-20210312-0002/
• https://www.openwall.com/lists/oss-security/2021/01/22/1
• https://bugzilla.redhat.com/show_bug.cgi?id=1915823
• https://github.com/qemu/qemu/commit/ebf101955ce8f8d72fba103b5151115a4335de2c
• https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg05461.html
• https://security.gentoo.org/glsa/202208-27
• https://security.netapp.com/advisory/ntap-20210312-0002/
• https://www.openwall.com/lists/oss-security/2021/01/22/1

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