CVE-2016-4971

Exp

GNU wget before 1.18 allows remote servers to write to arbitrary files by redirecting a request from HTTP to a crafted FTP resource.

Published: 2016-06-30 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-4971 is rated High Exploit Risk (83.6/100): CVSS High severity, with high exploitation likelihood (EPSS 73.79%, 99th percentile). 5 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2016-4971

EDB-ID Source Kind Published Link
49815 exploit_db edb 2021-04-30 Exploit-DB ↗
40064 exploit_db edb 2016-07-06 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2016-4971

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 2026-06-01 75.00% 73.79% -1.21%
2 2026-02-16 74.35% 75.00% +0.64%
3 2026-02-09 — 74.35% —

Full EPSS history (26 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-4971

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/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: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:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N 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:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2016-4971

OS Trackers for CVE-2016-4971

vendor priority summary link
debian not yet assigned CVE-2016-4971 not yet assigned priority: Debian including 1 source packages (wget), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2016-4971
gentoo normal CVE-2016-4971: 1 GLSA(s) (201610-11), 1 atom(s) (net-misc/wget); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2016-4971
redhat medium — https://access.redhat.com/security/cve/CVE-2016-4971
suse medium — https://www.suse.com/security/cve/CVE-2016-4971/
ubuntu medium CVE-2016-4971 medium priority: Ubuntu including 1 source packages (wget), 7 status rows across 7 suites (precise, trusty, upstream, wily, xenial, yakkety, zesty): released 7. https://ubuntu.com/security/CVE-2016-4971

Affected software / configurations for CVE-2016-4971

Vendor Product Version Raw CPE
gnu wget < 1.18 cpe:2.3:a:gnu:wget:*:*:*:*:*:*:*:*
canonical ubuntu_linux 12.04 cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*
canonical ubuntu_linux 14.04 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
canonical ubuntu_linux 15.10 cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*
canonical ubuntu_linux 16.04 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
oracle solaris 10 cpe:2.3:o:oracle:solaris:10:*:*:*:*:*:*:*
oracle solaris 11.3 cpe:2.3:o:oracle:solaris:11.3:*:*:*:*:*:*:*
paloaltonetworks pan-os >= 6.1.0, <= 6.1.16 cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*
paloaltonetworks pan-os >= 7.0.0, <= 7.0.14 cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*
paloaltonetworks pan-os >= 7.1.0, <= 7.1.9 cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*

References for CVE-2016-4971

URL Tags
http://git.savannah.gnu.org/cgit/wget.git/commit/?id=e996e322ffd42aaa051602da182d03178d0f13e1 Patch Vendor Advisory
http://lists.gnu.org/archive/html/info-gnu/2016-06/msg00004.html Mailing List Patch Vendor Advisory
http://lists.opensuse.org/opensuse-updates/2016-08/msg00043.html Broken Link
http://packetstormsecurity.com/files/162395/GNU-wget-Arbitrary-File-Upload-Code-Execution.html Exploit Third Party Advisory VDB Entry
http://rhn.redhat.com/errata/RHSA-2016-2587.html Broken Link
http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html Third Party Advisory
http://www.securityfocus.com/bid/91530 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1036133 Third Party Advisory VDB Entry
http://www.ubuntu.com/usn/USN-3012-1 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1343666 Exploit Issue Tracking Patch Third Party Advisory
https://security.gentoo.org/glsa/201610-11 Third Party Advisory
https://security.paloaltonetworks.com/CVE-2016-4971 Third Party Advisory
https://www.exploit-db.com/exploits/40064/ Exploit Third Party Advisory VDB Entry
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