CVE-2015-7548

OpenStack Compute (Nova) before 2015.1.3 (kilo) and 12.0.x before 12.0.1 (liberty), when using libvirt to spawn instances and use_cow_images is set to false, allow remote authenticated users to read arbitrary files by overwriting an instance disk with a crafted image and requesting a snapshot.

Published: 2016-01-12 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-7548 is rated Moderate Risk (42.1/100): CVSS Low severity, with medium exploitation likelihood (EPSS 1.80%). EPSS rose +1.63% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2015-7548

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 2026-06-15 0.17% 1.80% +1.63%
2 2025-07-03 0.32% 0.17% -0.15%
3 2025-03-30 — 0.32% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-7548

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
3.5 3.0 LOW
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 1.8 1.4 [email protected]
2.1 2.0 LOW
AV:N/AC:H/Au:S/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:H)
Exploitation requires uncommon or highly specific conditions.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 3.9 2.9 [email protected]

Weakness enumeration for CVE-2015-7548

OS Trackers for CVE-2015-7548

vendor priority summary link
debian not yet assigned CVE-2015-7548 not yet assigned priority: Debian including 1 source packages (nova), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2015-7548
redhat high — https://access.redhat.com/security/cve/CVE-2015-7548
suse medium CVE-2015-7548 severity moderate: SUSE including 54 source package names (openstack-keystone-2014.2.4.juno-17.1, openstack-keystone-doc-2014.2.4.juno-17.2, …), 67 product×package rows across 3 product lines (SUSE OpenStack Cloud 5, SUSE OpenStack Cloud 6, SUSE OpenStack Cloud 7): Fixed 39, Known Not Affected 28. https://www.suse.com/security/cve/CVE-2015-7548/
ubuntu medium CVE-2015-7548 medium priority: Ubuntu including 1 source packages (nova), 8 status rows across 8 suites (precise, trusty, upstream, vivid, wily, xenial, yakkety, zesty): not-affected 4, ignored 2, released 2. https://ubuntu.com/security/CVE-2015-7548

Affected software / configurations for CVE-2015-7548

Vendor Product Version Raw CPE
openstack nova >= 12.0.0, < 12.0.1 cpe:2.3:a:openstack:nova:*:*:*:*:*:*:*:*
openstack nova >= 2015.1.0, < 2015.1.3 cpe:2.3:a:openstack:nova:*:*:*:*:*:*:*:*

References for CVE-2015-7548

cvelogic Threat Intelligence