CVE-2016-4971

HIGHNVD 8.88.9▲
EchelonGraph scoreHIGH confidence

Score elevated to 8.9 because EPSS predicts 46% probability of exploitation within the next 30 days (top 1.3% of all CVEs). NVD baseline CVSS 8.8 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction ≥85%
Sources: epss, ghsa, nvd
Weaponized
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 46%CVSS: 8.8Exploit: NoneExposed: 0

A fix is available — apply it.

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

CVSS v3
8.8
EG Score
8.9(high)
EG Risk
71(Track)
EG Risk 71/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity89% × 45%
Exploitation65% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
98.7%
KEV
Not listed

Published

June 30, 2016

Last Modified

May 6, 2026

Advisory Details (6)

Auto-updated May 10, 2026
Patch available. Sources: redhat.
redhat Patch Available

1343666 – (CVE-2016-4971) CVE-2016-4971 wget: Lack of filename checking allows arbitrary file upload via FTP redirect

Affected: Red Hat Enterprise Linux 7

https://bugzilla.redhat.com/show_bug.cgi?id=1343666
generic
http://www.securityfocus.com/bid/91530
generic
http://rhn.redhat.com/errata/RHSA-2016-2587.html
generic

Packet Storm

http://packetstormsecurity.com/files/162395/GNU-wget-Arbitrary-File-Upload-Code-Execution.html
generic

GNU wget 1.18 released

http://lists.gnu.org/archive/html/info-gnu/2016-06/msg00004.html
generic

wget.git - GNU Wget

http://git.savannah.gnu.org/cgit/wget.git/commit/?id=e996e322ffd42aaa051602da182d03178d0f13e1

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuwget-udeb (1.17.1-1ubuntu1.1) @ xenial2026-05-22ubuntu
redhatwget-0:1.14-13.el72016-11-03redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

All Vendor Advisories

(2)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 11× in last 7d / 27× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-23 14:14 UTCEPSS rescore
  2. 2026-07-23 01:23 UTCEG score recompute▲ 0.10
  3. 2026-07-22 22:02 UTCEG score recompute
  4. 2026-07-22 14:04 UTCEPSS rescore
  5. 2026-07-21 15:21 UTCEPSS rescore
  6. 2026-07-21 15:21 UTCEPSS rescore
  7. 2026-07-20 17:03 UTCEPSS rescore
  8. 2026-07-19 02:26 UTCEPSS rescore
  9. 2026-07-19 02:26 UTCEPSS rescore
  10. 2026-07-18 10:00 UTCEPSS rescore
  11. 2026-07-18 10:00 UTCEPSS rescore
  12. 2026-07-15 16:54 UTCEPSS rescore
  13. 2026-07-15 16:54 UTCEPSS rescore
  14. 2026-07-13 22:26 UTCEPSS rescore
  15. 2026-07-13 06:09 UTCEPSS rescore
  16. 2026-07-12 09:07 UTCOSV refresh
  17. 2026-07-12 05:43 UTCEPSS rescore
  18. 2026-07-12 05:43 UTCEPSS rescore
  19. 2026-07-11 08:23 UTCEPSS rescore
  20. 2026-07-09 19:05 UTCEPSS rescore
  21. 2026-07-08 15:10 UTCEPSS rescore
  22. 2026-07-04 06:28 UTCEPSS rescore
  23. 2026-07-01 15:02 UTCEPSS rescore
  24. 2026-06-29 14:03 UTCEPSS rescore
  25. 2026-06-28 04:53 UTCEPSS rescore
Show 45 more
  1. 2026-06-25 13:47 UTCEPSS rescore
  2. 2026-06-25 13:47 UTCEPSS rescore
  3. 2026-06-24 14:02 UTCEPSS rescore
  4. 2026-06-24 14:02 UTCEPSS rescore
  5. 2026-06-23 21:30 UTCEPSS rescore
  6. 2026-06-23 14:30 UTCOSV refresh
  7. 2026-06-22 14:23 UTCEPSS rescore
  8. 2026-06-21 01:57 UTCEPSS rescore
  9. 2026-06-21 01:57 UTCEPSS rescore
  10. 2026-06-18 17:50 UTCEPSS rescore
  11. 2026-06-17 17:50 UTCEPSS rescore
  12. 2026-06-17 17:50 UTCEPSS rescore
  13. 2026-06-16 17:50 UTCEPSS rescore
  14. 2026-06-16 17:50 UTCEPSS rescore
  15. 2026-06-15 17:45 UTCEPSS rescore
  16. 2026-06-13 22:57 UTCEPSS rescore
  17. 2026-06-13 22:57 UTCEPSS rescore
  18. 2026-06-12 23:09 UTCEPSS rescore
  19. 2026-06-12 23:09 UTCEPSS rescore
  20. 2026-06-11 13:57 UTCEPSS rescore
  21. 2026-06-10 22:15 UTCEPSS rescore
  22. 2026-06-10 13:18 UTCEPSS rescore
  23. 2026-06-08 14:14 UTCEPSS rescore
  24. 2026-06-07 15:22 UTCEPSS rescore
  25. 2026-06-07 15:22 UTCEPSS rescore
  26. 2026-06-06 18:29 UTCOSV refresh
  27. 2026-06-06 13:45 UTCEPSS rescore
  28. 2026-06-05 22:44 UTCEPSS rescore
  29. 2026-06-05 06:08 UTCEPSS rescore
  30. 2026-06-05 06:08 UTCEPSS rescore
  31. 2026-06-02 20:10 UTCEPSS rescore
  32. 2026-06-01 13:49 UTCEPSS rescore
  33. 2026-06-01 13:49 UTCEPSS rescore
  34. 2026-05-31 00:14 UTCEPSS rescore
  35. 2026-05-29 13:41 UTCEPSS rescore
  36. 2026-05-28 13:42 UTCEPSS rescore
  37. 2026-05-28 13:42 UTCEPSS rescore
  38. 2026-05-26 07:16 UTCEPSS rescore
  39. 2026-05-24 16:43 UTCEPSS rescore
  40. 2026-05-22 19:48 UTCEG score recompute
  41. 2026-05-22 19:48 UTCVendor advisory
  42. 2026-05-22 19:48 UTCGHSA enrichment
  43. 2026-05-21 22:40 UTCEPSS rescore
  44. 2026-05-18 21:30 UTCEPSS rescore
  45. 2026-05-18 21:30 UTCEPSS rescore

Publicly available exploits

(2 references)

Working exploit code is in the public domain (2 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-49815
    First seen Apr 30, 2021

    GNU Wget < 1.18 - Arbitrary File Upload (2)

    Open source ↗
  • Exploit-DBEDB-40064✓ verified
    First seen Jul 6, 2016

    GNU Wget < 1.18 - Arbitrary File Upload / Remote Code Execution

    Open source ↗

Frequently asked(5)

What is CVE-2016-4971?
CVE-2016-4971 is a high vulnerability published on June 30, 2016. GNU wget before 1.18 allows remote servers to write to arbitrary files by redirecting a request from HTTP to a crafted FTP resource.
When was CVE-2016-4971 disclosed?
CVE-2016-4971 was first published in the National Vulnerability Database on June 30, 2016, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-4971 actively exploited?
CVE-2016-4971 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2016-4971?
CVE-2016-4971 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 8.9.
How do I remediate CVE-2016-4971?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-4971, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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