CVE-2016-9317

The gdImageCreate function in the GD Graphics Library (aka libgd) before 2.2.4 allows remote attackers to cause a denial of service (system hang) via an oversized image.

Published: 2017-01-26 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-9317 is rated Moderate Risk (55.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.58%). EPSS rose +2.84% 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-2016-9317

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 0.74% 3.58% +2.84%
2 2026-05-29 1.09% 0.74% -0.35%
3 2026-03-04 — 1.09% —

Full EPSS history (37 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-9317

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.5 3.0 MEDIUM
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
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:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
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.
 1.8 3.6 [email protected]
7.1 2.0 HIGH
AV:N/AC:M/Au:N/C:N/I:N/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 6.9 [email protected]

Weakness enumeration for CVE-2016-9317

OS Trackers for CVE-2016-9317

vendor priority summary link
debian not yet assigned CVE-2016-9317 not yet assigned priority: Debian including 1 source packages (libgd2), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2016-9317
redhat medium — https://access.redhat.com/security/cve/CVE-2016-9317
suse medium — https://www.suse.com/security/cve/CVE-2016-9317/
ubuntu low CVE-2016-9317 low priority: Ubuntu including 3 source packages (libgd2, php5, php7.0), 15 status rows across 5 suites (precise, trusty, upstream, xenial, yakkety): released 5, DNE 4, not-affected 4, needs-triage 2. https://ubuntu.com/security/CVE-2016-9317

Affected software / configurations for CVE-2016-9317

Vendor Product Version Raw CPE
libgd libgd <= 2.2.3 cpe:2.3:a:libgd:libgd:*:*:*:*:*:*:*:*

References for CVE-2016-9317

cvelogic Threat Intelligence