CVE-2015-5745

MEDIUMNVD 6.56.5—

6.5

Buffer overflow in the send_control_msg function in hw/char/virtio-serial-bus.c in QEMU before 2.4.0 allows guest users to cause a denial of service (QEMU process crash) via a crafted virtio control message.

CVSS v3: 6.5
EG Score: 6.5(medium)
EPSS: 80.7%
KEV: Not listed

Published

January 23, 2020

Last Modified

November 21, 2024

References (16)

secalert@redhathttp://lists.fedoraproject.org/pipermail/package-announce/2015-October/168077.html
secalert@redhathttp://lists.fedoraproject.org/pipermail/package-announce/2015-October/168646.html
secalert@redhathttp://lists.fedoraproject.org/pipermail/package-announce/2015-October/168671.html
secalert@redhathttp://www.openwall.com/lists/oss-security/2015/08/06/3
secalert@redhathttp://www.openwall.com/lists/oss-security/2015/08/06/5
secalert@redhathttps://github.com/qemu/qemu/commit/7882080388be5088e72c425b02223c02e6cb4295
secalert@redhathttps://lists.gnu.org/archive/html/qemu-devel/2015-07/msg05458.html
secalert@redhathttps://www.arista.com/en/support/advisories-notices/security-advisories/1180-security-advisory-13
af854a3a-2127-422b-91ae-364da2661108http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168077.html
af854a3a-2127-422b-91ae-364da2661108http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168646.html
af854a3a-2127-422b-91ae-364da2661108http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168671.html
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2015/08/06/3
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2015/08/06/5
af854a3a-2127-422b-91ae-364da2661108https://github.com/qemu/qemu/commit/7882080388be5088e72c425b02223c02e6cb4295
af854a3a-2127-422b-91ae-364da2661108https://lists.gnu.org/archive/html/qemu-devel/2015-07/msg05458.html

Patch Availability(1)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	qemu-system-x86 (1:2.2+dfsg-5expubuntu9.4) @ vivid	2026-05-27	ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-120Buffer Copy without Checking Size (Classic Buffer Overflow)

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

UbuntuUSN-2724-1MEDIUM
QEMU vulnerabilities

Data Freshness Timeline

(refreshed 10× in last 7d / 10× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-27 08:45 UTCEG score recompute
2026-05-27 08:45 UTCVendor advisory
2026-05-27 08:45 UTCGHSA enrichment
2026-05-27 02:44 UTCOSV refresh
2026-05-26 13:41 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-24 16:43 UTCepss_batch

Frequently asked(5)

What is CVE-2015-5745?

CVE-2015-5745 is a medium vulnerability published on January 23, 2020. Buffer overflow in the sendcontrolmsg function in hw/char/virtio-serial-bus.c in QEMU before 2.4.0 allows guest users to cause a denial of service (QEMU process crash) via a crafted virtio control message.

When was CVE-2015-5745 disclosed?

CVE-2015-5745 was first published in the National Vulnerability Database on January 23, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2015-5745 actively exploited?

CVE-2015-5745 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 80.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2015-5745?

CVE-2015-5745 has a CVSS v3 base score of 6.5 (NVD).

How do I remediate CVE-2015-5745?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-5745, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2015-5745

Published

Last Modified

References (16)

Patch Availability(1)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2015-5745?

Same vendor

Same CWE

CVE-2015-5745

📅 Published

🔄 Last Modified

🔗 References (16)

Patch Availability(1)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2015-5745?

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References (16)

Frequently asked(5)

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