CVE-2018-16845

MEDIUMNVD 6.16.1—
EchelonGraph scoreMEDIUM confidence

Score 6.1 from GitHub Security Advisory published 2022-05-13. NVD baseline CVSS 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this weekElevated
6.1
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 10%CVSS: 6.1Exploit: NoneExposed: 0

A fix is available — apply it.

nginx before versions 1.15.6, 1.14.1 has a vulnerability in the ngx_http_mp4_module, which might allow an attacker to cause infinite loop in a worker process, cause a worker process crash, or might result in worker process memory disclosure by using a specially crafted mp4 file. The issue only affects nginx if it is built with the ngx_http_mp4_module (the module is not built by default) and the .mp4. directive is used in the configuration file. Further, the attack is only possible if an attacker is able to trigger processing of a specially crafted mp4 file with the ngx_http_mp4_module.

CVSS v3
6.1
EG Score
6.1(medium)
EPSS
95.0%
KEV
Not listed

Published

November 7, 2018

Last Modified

November 21, 2024

References (28)

Patch Availability(5)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntunginx-light (1.10.3-0ubuntu0.16.04.3) @ xenial2026-05-28ubuntu
redhatrh-nginx114-nginx-1:1.14.1-1.el72018-11-27redhat
redhatrh-nginx112-nginx-1:1.12.1-2.el7.12018-11-27redhat
redhatrh-nginx18-nginx-1:1.8.1-1.el7.12018-11-26redhat
redhatrh-nginx110-nginx-1:1.10.2-8.el7.12018-11-26redhat

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.

Weakness Classification(2)

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

All Vendor Advisories

(5)

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 / 40× 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. 2026-07-22 22:14 UTCEG score recompute
  2. 2026-07-22 14:04 UTCEPSS rescore
  3. 2026-07-21 15:21 UTCEPSS rescore
  4. 2026-07-21 03:17 UTCOSV refresh
  5. 2026-07-20 17:04 UTCEPSS rescore
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  7. 2026-07-19 14:28 UTCEPSS rescore
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  1. 2026-07-03 22:26 UTCOSV refresh
  2. 2026-07-02 16:54 UTCEPSS rescore
  3. 2026-07-01 15:03 UTCEPSS rescore
  4. 2026-07-01 15:03 UTCEPSS rescore
  5. 2026-06-30 23:19 UTCEPSS rescore
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  7. 2026-06-28 14:04 UTCEPSS rescore
  8. 2026-06-28 04:53 UTCEPSS rescore
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  10. 2026-06-27 03:06 UTCEPSS rescore
  11. 2026-06-25 13:47 UTCEPSS rescore
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  18. 2026-06-21 01:57 UTCEPSS rescore
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  23. 2026-06-17 17:50 UTCEPSS rescore
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  25. 2026-06-16 17:50 UTCEPSS rescore
  26. 2026-06-16 17:50 UTCEPSS rescore
  27. 2026-06-15 17:45 UTCEPSS rescore
  28. 2026-06-15 10:43 UTCOSV refresh
  29. 2026-06-14 23:14 UTCEPSS rescore
  30. 2026-06-14 23:14 UTCEPSS rescore
  31. 2026-06-13 22:58 UTCEPSS rescore
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  33. 2026-06-12 23:09 UTCEPSS rescore
  34. 2026-06-11 13:57 UTCEPSS rescore
  35. 2026-06-10 22:16 UTCEPSS rescore
  36. 2026-06-10 13:19 UTCEPSS rescore
  37. 2026-06-07 15:22 UTCEPSS rescore
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  39. 2026-06-06 13:45 UTCEPSS rescore
  40. 2026-06-06 13:45 UTCEPSS rescore
  41. 2026-06-05 22:45 UTCEPSS rescore
  42. 2026-06-05 22:44 UTCEPSS rescore
  43. 2026-06-05 06:08 UTCEPSS rescore
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  45. 2026-06-04 13:10 UTCEPSS rescore
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  47. 2026-06-02 20:11 UTCEPSS rescore
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  49. 2026-06-01 13:49 UTCEPSS rescore
  50. 2026-05-31 22:29 UTCEPSS rescore
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  52. 2026-05-31 00:14 UTCEPSS rescore
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  54. 2026-05-29 13:41 UTCEPSS rescore
  55. 2026-05-28 13:42 UTCEPSS rescore
  56. 2026-05-28 13:42 UTCEPSS rescore
  57. 2026-05-28 01:22 UTCEG score recompute
  58. 2026-05-28 01:22 UTCVendor advisory
  59. 2026-05-28 01:22 UTCGHSA enrichment
  60. 2026-05-27 14:05 UTCOSV refresh
  61. 2026-05-27 13:38 UTCEPSS rescore
  62. 2026-05-27 13:38 UTCEPSS rescore
  63. 2026-05-26 13:42 UTCEPSS rescore
  64. 2026-05-26 13:42 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2018-16845?
CVE-2018-16845 is a medium vulnerability published on November 7, 2018. nginx before versions 1.15.6, 1.14.1 has a vulnerability in the ngxhttpmp4module, which might allow an attacker to cause infinite loop in a worker process, cause a worker process crash, or might result in worker process memory disclosure by using a specially crafted mp4 file. The issue only affects…
When was CVE-2018-16845 disclosed?
CVE-2018-16845 was first published in the National Vulnerability Database on November 7, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-16845 actively exploited?
CVE-2018-16845 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 95.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2018-16845?
CVE-2018-16845 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2018-16845?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-16845, 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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