CVE-2016-0738

OpenStack Object Storage (Swift) before 2.3.1 (Kilo), 2.4.x, and 2.5.x before 2.5.1 (Liberty) do not properly close server connections, which allows remote attackers to cause a denial of service (proxy-server resource consumption) via a series of interrupted requests to a Large Object URL.

Published: 2016-01-29 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-0738 is rated Moderate Risk (59/100): CVSS High severity, with medium exploitation likelihood (EPSS 3.82%). 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-2016-0738

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 5.83% 3.82% -2.01%
2 2025-03-30 14.82% 5.83% -8.99%
3 2025-03-29 — 14.82% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-0738

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.0 HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 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:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2016-0738

GitHub Security Advisory for CVE-2016-0738

GHSA-fxwr-2vxm-cg7p · Severity: high · Ecosystem: pip — OpenStack Object Storage (Swift) allows remote attackers to cause a denial of service

OS Trackers for CVE-2016-0738

vendor priority summary link
debian not yet assigned CVE-2016-0738 not yet assigned priority: Debian including 1 source packages (swift), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2016-0738
redhat medium — https://access.redhat.com/security/cve/CVE-2016-0738
ubuntu low CVE-2016-0738 low priority: Ubuntu including 1 source packages (swift), 8 status rows across 8 suites (precise, trusty, upstream, vivid, wily, xenial, yakkety, zesty): ignored 3, not-affected 3, released 2. https://ubuntu.com/security/CVE-2016-0738

Affected software / configurations for CVE-2016-0738

Vendor Product Version Raw CPE
openstack swift <= 2.3.0 cpe:2.3:a:openstack:swift:*:*:*:*:*:*:*:*
openstack swift 2.4.0 cpe:2.3:a:openstack:swift:2.4.0:*:*:*:*:*:*:*
openstack swift 2.5.0 cpe:2.3:a:openstack:swift:2.5.0:*:*:*:*:*:*:*

References for CVE-2016-0738

cvelogic Threat Intelligence