The C+ mode offload emulation in the RTL8139 network card device model in QEMU, as used in Xen 4.5.x and earlier, allows remote attackers to read process heap memory via unspecified vectors.
Conclusion & alert: CVE-2015-5165 is rated High Risk (69.9/100): CVSS Critical severity, with high exploitation likelihood (EPSS 12.94%, 94th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. Mandatory action: High exploitation likelihood—assess exposure and prioritize remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-05-24 | 13.16% | 12.94% | -0.22% |
| 2 | 2026-03-14 | 10.57% | 13.16% | +2.59% |
| 3 | 2026-02-18 | — | 10.57% | — |
Full EPSS history (17 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 9.3 | 2.0 | HIGH |
|
8.6 | 10.0 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2015-5165 not yet assigned priority: Debian including 2 source packages (qemu, xen), 10 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 10. | https://security-tracker.debian.org/tracker/CVE-2015-5165 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2015-5165 |
suse
|
medium | CVE-2015-5165 severity moderate: SUSE including 70 source package names (libcacard-1.5.3-86.el7_1.6, libcacard-devel-1.5.3-86.el7_1.6, …), 181 product×package rows across 38 product lines (SUSE CaaS Platform 4.5, SUSE Enterprise Storage 7, … (38 product lines)): Fixed 115, Known Not Affected 66. | https://www.suse.com/security/cve/CVE-2015-5165/ |
ubuntu
|
medium | CVE-2015-5165 medium priority: Ubuntu including 3 source packages (qemu, qemu-kvm, xen), 15 status rows across 5 suites (precise, trusty, upstream, utopic, vivid): released 5, DNE 4, needs-triage 3, ignored 2, not-affected 1. | https://ubuntu.com/security/CVE-2015-5165 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| xen | xen | <= 4.5.0 | cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* |
| xen | xen | 4.5.1 | cpe:2.3:o:xen:xen:4.5.1:*:*:*:*:*:*:* |
| fedoraproject | fedora | 21 | cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:* |
| fedoraproject | fedora | 22 | cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:* |
| suse | linux_enterprise_debuginfo | 11 | cpe:2.3:a:suse:linux_enterprise_debuginfo:11:sp1:*:*:*:*:*:* |
| suse | linux_enterprise_server | 10 | cpe:2.3:o:suse:linux_enterprise_server:10:sp4:*:*:ltss:*:*:* |
| suse | linux_enterprise_server | 11 | cpe:2.3:o:suse:linux_enterprise_server:11:sp1:*:*:ltss:*:*:* |
| debian | debian_linux | 7.0 | cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* |
| debian | debian_linux | 8.0 | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
| redhat | openstack | 5.0 | cpe:2.3:a:redhat:openstack:5.0:*:*:*:*:*:*:* |
| redhat | openstack | 6.0 | cpe:2.3:a:redhat:openstack:6.0:*:*:*:*:*:*:* |
| redhat | virtualization | 3.0 | cpe:2.3:a:redhat:virtualization:3.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_compute_node_eus | 7.1 | cpe:2.3:o:redhat:enterprise_linux_compute_node_eus:7.1:*:*:*:*:*:*:* |
| redhat | enterprise_linux_compute_node_eus | 7.2 | cpe:2.3:o:redhat:enterprise_linux_compute_node_eus:7.2:*:*:*:*:*:*:* |
| redhat | enterprise_linux_compute_node_eus | 7.3 | cpe:2.3:o:redhat:enterprise_linux_compute_node_eus:7.3:*:*:*:*:*:*:* |
| redhat | enterprise_linux_compute_node_eus | 7.4 | cpe:2.3:o:redhat:enterprise_linux_compute_node_eus:7.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_compute_node_eus | 7.5 | cpe:2.3:o:redhat:enterprise_linux_compute_node_eus:7.5:*:*:*:*:*:*:* |
| redhat | enterprise_linux_compute_node_eus | 7.6 | cpe:2.3:o:redhat:enterprise_linux_compute_node_eus:7.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_compute_node_eus | 7.7 | cpe:2.3:o:redhat:enterprise_linux_compute_node_eus:7.7:*:*:*:*:*:*:* |
| redhat | enterprise_linux_desktop | 6.0 | cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_eus | 6.7 | cpe:2.3:o:redhat:enterprise_linux_eus:6.7:*:*:*:*:*:*:* |
| redhat | enterprise_linux_eus_compute_node | 6.7 | cpe:2.3:o:redhat:enterprise_linux_eus_compute_node:6.7:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_big_endian | 6.0 | cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian:6.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_big_endian | 7.0 | cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_big_endian_eus | 6.7_ppc64 | cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian_eus:6.7_ppc64:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_big_endian_eus | 7.1_ppc64 | cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian_eus:7.1_ppc64:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_big_endian_eus | 7.2_ppc64 | cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian_eus:7.2_ppc64:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_big_endian_eus | 7.3_ppc64 | cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian_eus:7.3_ppc64:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_big_endian_eus | 7.4_ppc64 | cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian_eus:7.4_ppc64:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_big_endian_eus | 7.5_ppc64 | cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian_eus:7.5_ppc64:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_big_endian_eus | 7.6_ppc64 | cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian_eus:7.6_ppc64:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_big_endian_eus | 7.7_ppc64 | cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian_eus:7.7_ppc64:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_scientific_computing | 6.0 | cpe:2.3:o:redhat:enterprise_linux_for_scientific_computing:6.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_scientific_computing | 7.0 | cpe:2.3:o:redhat:enterprise_linux_for_scientific_computing:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server | 6.0 | cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server | 7.0 | cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_aus | 7.3 | cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_aus | 7.4 | cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_aus | 7.6 | cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_aus | 7.7 | cpe:2.3:o:redhat:enterprise_linux_server_aus:7.7:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_eus | 7.1 | cpe:2.3:o:redhat:enterprise_linux_server_eus:7.1:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_eus | 7.2 | cpe:2.3:o:redhat:enterprise_linux_server_eus:7.2:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_eus | 7.3 | cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_eus | 7.4 | cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_eus | 7.5 | cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_eus | 7.6 | cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_eus | 7.7 | cpe:2.3:o:redhat:enterprise_linux_server_eus:7.7:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_eus_from_rhui | 6.7 | cpe:2.3:o:redhat:enterprise_linux_server_eus_from_rhui:6.7:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_from_rhui | 6.0 | cpe:2.3:o:redhat:enterprise_linux_server_from_rhui:6.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_from_rhui | 7.0 | cpe:2.3:o:redhat:enterprise_linux_server_from_rhui:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_tus | 7.3 | cpe:2.3:o:redhat:enterprise_linux_server_tus:7.3:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_tus | 7.6 | cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_tus | 7.7 | cpe:2.3:o:redhat:enterprise_linux_server_tus:7.7:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_update_services_for_sap_solutions | 7.2 | cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:7.2:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_update_services_for_sap_solutions | 7.3 | cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:7.3:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_update_services_for_sap_solutions | 7.4 | cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:7.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_update_services_for_sap_solutions | 7.6 | cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:7.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_update_services_for_sap_solutions | 7.7 | cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:7.7:*:*:*:*:*:*:* |
| redhat | enterprise_linux_workstation | 6.0 | cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_workstation | 7.0 | cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* |
| arista | eos | 4.12 | cpe:2.3:o:arista:eos:4.12:*:*:*:*:*:*:* |
| arista | eos | 4.13 | cpe:2.3:o:arista:eos:4.13:*:*:*:*:*:*:* |
| arista | eos | 4.14 | cpe:2.3:o:arista:eos:4.14:*:*:*:*:*:*:* |
| arista | eos | 4.15 | cpe:2.3:o:arista:eos:4.15:*:*:*:*:*:*:* |
| oracle | linux | 7 | cpe:2.3:o:oracle:linux:7:0:*:*:*:*:*:* |