Security readout for executives and security teams
CVE-2015-3456, known as VENOM, is a flaw in QEMU's emulated floppy controller used by Xen and KVM. A user inside a vulnerable guest VM could crash the guest or possibly execute code beyond the intended guest boundary. This is most urgent for organizations running multi-tenant or untrusted virtual machines. Exposure is likely where legacy Xen 4.5.x or earlier, KVM, or QEMU-based virtualization still includes the vulnerable FDC device. The cited affected-product metadata is incomplete, so confirm exposure against vendor advisories and installed hypervisor/QEMU package versions. Treat this as high priority if any vulnerable virtualization hosts remain, especially in multi-tenant environments. The business risk is a guest-to-host boundary failure with possible code execution. If modern patched hypervisors are confirmed, residual urgency drops sharply. Mitigation focus: Apply vendor updates from Xen, Debian, Red Hat, SUSE, Gentoo, Oracle, Citrix, or other applicable providers.; Inventory QEMU, Xen, and KVM packages on all virtualization hosts.; Prioritize hosts running untrusted, customer-controlled, or multi-tenant guest VMs..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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Execution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2015-3456 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- 37053CVE reference · exploit, x_refsource_EXPLOIT-DB
- https://kb.juniper.net/JSA10783CVE reference · x_refsource_CONFIRM
- GLSA-201612-27CVE reference · vendor-advisory, x_refsource_GENTOO
- https://kc.mcafee.com/corporate/index?page=content&id=SB10118CVE reference · x_refsource_CONFIRM
- https://www.suse.com/security/cve/CVE-2015-3456.htmlCVE reference · x_refsource_CONFIRM
- https://bto.bluecoat.com/security-advisory/sa95CVE reference · x_refsource_CONFIRM
- https://support.lenovo.com/us/en/product_security/venomCVE reference · x_refsource_CONFIRM
- GLSA-201604-03CVE reference · vendor-advisory, x_refsource_GENTOO
- https://securityblog.redhat.com/2015/05/13/venom-dont-get-bitten/CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.