THREATPORT/VULNERABILITY/CVE-2015-3456
HIGH SEVERITY

CVE-2015-3456

Qemu vulnerability

CVSS
7.7
EPSS
15.3%
EPSS pct
96th
Exploited
No known
The Floppy Disk Controller (FDC) in QEMU, as used in Xen 4.5.x and earlier and KVM, allows local guest users to cause a denial of service (out-of-bounds write and guest crash) or possibly execute arbitrary code via the (1) FD_CMD_READ_ID, (2) FD_CMD_DRIVE_SPECIFICATION_COMMAND, or other unspecified commands, aka VENOM.
Affected vendor
Qemu
Affected product
Qemu
CVSS vector
AV:A/AC:L/Au:S/C:C/I:C/A:C
Weakness type (CWE)
  • CWE-119 — Improper Restriction of Operations within Memory Bounds
Published
2015-05-13

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable from an adjacent network, low attack complexity, requiring single-factor authentication. Successful exploitation leads to complete impact to confidentiality, complete impact to integrity, complete impact to availability.

Its EPSS score of 15.3% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2015-3456

  • Confirm whether Qemu Qemu is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2015-3456.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2015-3456

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2015-3456 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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