CVE-2016-3994

The GIF loader in imlib2 before 1.4.9 allows remote attackers to cause a denial of service (application crash) or obtain sensitive information via a crafted image, which triggers an out-of-bounds read.

Published: 2016-05-13 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-3994 is rated Moderate Risk (64.2/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.78%). EPSS rose +1.79% 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-2016-3994

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 0.99% 2.78% +1.79%
2 2025-08-20 1.31% 0.99% -0.32%
3 2025-06-18 — 1.31% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-3994

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.2 3.0 HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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: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:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 4.2 [email protected]
6.4 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/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:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 4.9 [email protected]

Weakness enumeration for CVE-2016-3994

OS Trackers for CVE-2016-3994

vendor priority summary link
debian not yet assigned CVE-2016-3994 not yet assigned priority: Debian including 1 source packages (imlib2), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2016-3994
suse high CVE-2016-3994 severity important: SUSE including 7 source package names (imlib2, imlib2-1.4.2-2.20.1, …), 31 product×package rows across 14 product lines (SUSE CaaS Platform 4.5, SUSE Enterprise Storage 7, … (14 product lines)): Known Not Affected 27, Fixed 4. https://www.suse.com/security/cve/CVE-2016-3994/
ubuntu low CVE-2016-3994 low priority: Ubuntu including 1 source packages (imlib2), 5 status rows across 5 suites (precise, trusty, upstream, wily, xenial): released 4, ignored 1. https://ubuntu.com/security/CVE-2016-3994

Affected software / configurations for CVE-2016-3994

Vendor Product Version Raw CPE
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:*:*:*:*:*:*:*
enlightenment imlib2 <= 1.4.8 cpe:2.3:a:enlightenment:imlib2:*:*:*:*:*:*:*:*

References for CVE-2016-3994

cvelogic Threat Intelligence