CVE-2016-0746

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-13. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this weekElevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 8.9%CVSS: 9.8Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

Use-after-free vulnerability in the resolver in nginx 0.6.18 through 1.8.0 and 1.9.x before 1.9.10 allows remote attackers to cause a denial of service (worker process crash) or possibly have unspecified other impact via a crafted DNS response related to CNAME response processing.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
65
EG Risk 65/100CISA SSVC

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
Severity98% × 45%
Exploitation40% × 40%
Automatability30% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
8.9%
EPSS %ILE
95th
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (EG-KEV: elevated) · Automatable unknown (not published for this CVE) · Technical impact total (CVSS ≥ 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

February 15, 2016

Last Modified

June 17, 2026

Advisory Details (7)

Auto-updated Sep 30, 2026
Patch available. Sources: redhat.
generic

nginx: Multiple vulnerabilities (GLSA 201606-06) — Gentoo security

https://security.gentoo.org/glsa/201606-06
redhatMentions a patch (unverified)

1302588 – (CVE-2016-0746) CVE-2016-0746 nginx: use-after-free during CNAME response processing in resolver

Affected: Red Hat Enterprise Linux 7.2 EUS

https://bugzilla.redhat.com/show_bug.cgi?id=1302588
redhatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2016:1425
generic

[SECURITY] [DSA 3473-1] nginx security update

http://www.debian.org/security/2016/dsa-3473
generic

Full Disclosure: APPLE-SA-2021-09-20-4 Xcode 13

http://seclists.org/fulldisclosure/2021/Sep/36
generic

nginx security advisory (CVE-2016-0742, CVE-2016-0746, CVE-2016-0747)

http://mailman.nginx.org/pipermail/nginx/2016-January/049700.html
generic
http://www.securitytracker.com/id/1034869

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntunginx-light (1.9.3-1ubuntu1.1) @ wily2026-05-20ubuntu
redhatrh-nginx18-nginx-1:1.8.1-1.el72016-07-14redhat

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.

Affected Packages

(6 across 6 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
nginx—
  • every version up to 1.9.10-1: fixed in 1.9.10-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
nginx—
  • every version up to 1.9.10-1: fixed in 1.9.10-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
nginx—
  • every version up to 1.9.10-1: fixed in 1.9.10-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
nginx—
  • every version up to 1.9.10-1: fixed in 1.9.10-1
—
Debian:7(1)
PackageVulnerable rangeFix by version rangeDependents
nginx1.2.1-2.2, 1.2.1-2.2+wheezy1, 1.2.1-2.2+wheezy2, 1.2.1-2.2+wheezy3, 1.2.1-2.2+wheezy3~bpo60+1
  • every version up to 1.2.1-2.2+wheezy4: fixed in 1.2.1-2.2+wheezy4
—
Debian:8(1)
PackageVulnerable rangeFix by version rangeDependents
nginx1.6.2-5, 1.6.2-5+a.exp1, 1.6.2-5+deb8u1~bpo70+1
  • every version up to 1.6.2-5+deb8u1: fixed in 1.6.2-5+deb8u1
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

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 6× in last 7d / 22× 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.

Showing the most recent 100 of 169 total refreshes for this CVE.

  1. 2026-10-05 17:38 UTCEPSS rescore
  2. 2026-10-04 05:08 UTCOSV refresh
  3. 2026-10-03 14:21 UTCEPSS rescore
  4. 2026-09-30 14:58 UTCEPSS rescore
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  6. 2026-09-30 09:09 UTCEG score recompute
  7. 2026-09-28 13:45 UTCEPSS rescore
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  17. 2026-09-14 19:44 UTCOSV refresh
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  1. 2026-09-01 03:31 UTCEPSS rescore
  2. 2026-08-27 14:20 UTCEPSS rescore
  3. 2026-08-26 19:03 UTCOSV refresh
  4. 2026-08-26 14:41 UTCEPSS rescore
  5. 2026-08-25 13:44 UTCEPSS rescore
  6. 2026-08-23 00:13 UTCEPSS rescore
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  13. 2026-08-15 01:25 UTCEPSS rescore
  14. 2026-08-12 13:46 UTCEPSS rescore
  15. 2026-08-11 13:36 UTCEPSS rescore
  16. 2026-08-10 09:10 UTCOSV refresh
  17. 2026-08-09 13:42 UTCEPSS rescore
  18. 2026-08-08 16:32 UTCEPSS rescore
  19. 2026-08-07 16:22 UTCEPSS rescore
  20. 2026-08-06 13:42 UTCEPSS rescore
  21. 2026-08-05 19:12 UTCEPSS rescore
  22. 2026-08-04 15:04 UTCEPSS rescore
  23. 2026-08-01 04:11 UTCEPSS rescore
  24. 2026-07-30 01:26 UTCEPSS rescore
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  26. 2026-07-26 14:50 UTCEPSS rescore
  27. 2026-07-25 14:13 UTCEPSS rescore
  28. 2026-07-25 09:41 UTCOSV refresh
  29. 2026-07-24 14:13 UTCEPSS rescore
  30. 2026-07-23 14:14 UTCEPSS rescore
  31. 2026-07-23 01:20 UTCEG score recompute
  32. 2026-07-23 00:22 UTCEG score recompute
  33. 2026-07-22 22:00 UTCEG score recompute
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  37. 2026-07-20 17:03 UTCEPSS rescore
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  46. 2026-07-15 01:56 UTCEPSS rescore
  47. 2026-07-13 22:26 UTCEPSS rescore
  48. 2026-07-13 22:26 UTCEPSS rescore
  49. 2026-07-12 05:42 UTCEPSS rescore
  50. 2026-07-11 08:23 UTCEPSS rescore
  51. 2026-07-09 19:05 UTCEPSS rescore
  52. 2026-07-09 19:05 UTCEPSS rescore
  53. 2026-07-08 15:10 UTCEPSS rescore
  54. 2026-07-08 04:05 UTCOSV refresh
  55. 2026-07-07 13:42 UTCEPSS rescore
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  68. 2026-06-27 03:05 UTCEPSS rescore
  69. 2026-06-25 13:47 UTCEPSS rescore
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  73. 2026-06-23 21:30 UTCEPSS rescore
  74. 2026-06-22 14:23 UTCEPSS rescore
  75. 2026-06-22 14:23 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2016-0746?
CVE-2016-0746 is a critical vulnerability published on February 15, 2016. Use-after-free vulnerability in the resolver in nginx 0.6.18 through 1.8.0 and 1.9.x before 1.9.10 allows remote attackers to cause a denial of service (worker process crash) or possibly have unspecified other impact via a crafted DNS response related to CNAME response processing.
When was CVE-2016-0746 disclosed?
CVE-2016-0746 was first published on February 15, 2016, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-0746 actively exploited?
CVE-2016-0746 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 8.9% probability of exploitation in the next 30 days (95th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2016-0746?
CVE-2016-0746 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2016-0746?
A fix for CVE-2016-0746 is available: update to the fixed version the vendor names in its advisory.

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