CVE-2019-16278

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2024-11-07), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.8EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 99%CVSS: 9.8Exploit: cisa kev · ssvc active · Metasploit · Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Directory Traversal in the function http_verify in nostromo nhttpd through 1.9.6 allows an attacker to achieve remote code execution via a crafted HTTP request.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
99(Act)
EG Risk 99/100SSVC: Act

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%
Exploitation100% × 40%
Automatability100% × 15%
Action: Fix now — active exploitation, automatable, high impact.
EPSS PROB
99%
EPSS %ILE
100%
KEV
⚠ Exploited

Published

October 14, 2019

Last Modified

November 6, 2025

Advisory Details (1)

Auto-updated Jul 28, 2026
No patch confirmed yet.
generic
http://www.nazgul.ch/dev/nostromo_cl.txt

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 30× in last 7d / 176× 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 356 total refreshes for this CVE.

  1. 2026-07-28 18:00 UTCGHSA enrichment
  2. 2026-07-28 13:46 UTCGHSA enrichment
  3. 2026-07-28 09:31 UTCGHSA enrichment
  4. 2026-07-28 05:17 UTCGHSA enrichment
  5. 2026-07-28 01:03 UTCGHSA enrichment
  6. 2026-07-27 20:49 UTCGHSA enrichment
  7. 2026-07-27 19:24 UTCCISA KEV update
  8. 2026-07-27 17:17 UTCCISA KEV update
  9. 2026-07-27 16:35 UTCGHSA enrichment
  10. 2026-07-27 12:20 UTCGHSA enrichment
  11. 2026-07-27 08:06 UTCGHSA enrichment
  12. 2026-07-27 03:52 UTCGHSA enrichment
  13. 2026-07-26 23:38 UTCGHSA enrichment
  14. 2026-07-26 19:24 UTCGHSA enrichment
  15. 2026-07-26 15:07 UTCEG score recompute
  16. 2026-07-26 15:07 UTCGHSA enrichment
  17. 2026-07-26 14:51 UTCEPSS rescore
  18. 2026-07-26 10:50 UTCEG score recompute
  19. 2026-07-26 10:50 UTCGHSA enrichment
  20. 2026-07-26 06:36 UTCGHSA enrichment
  21. 2026-07-26 02:20 UTCGHSA enrichment
  22. 2026-07-23 01:41 UTCEG score recompute
  23. 2026-07-22 21:45 UTCEG score recompute
  24. 2026-07-22 21:45 UTCGHSA enrichment
  25. 2026-07-22 19:40 UTCCISA KEV update
Show 75 more
  1. 2026-07-22 17:26 UTCGHSA enrichment
  2. 2026-07-22 13:10 UTCGHSA enrichment
  3. 2026-07-22 08:56 UTCGHSA enrichment
  4. 2026-07-22 04:41 UTCGHSA enrichment
  5. 2026-07-22 00:25 UTCGHSA enrichment
  6. 2026-07-21 17:34 UTCGHSA enrichment
  7. 2026-07-21 14:37 UTCCISA KEV update
  8. 2026-07-21 13:20 UTCGHSA enrichment
  9. 2026-07-21 09:05 UTCGHSA enrichment
  10. 2026-07-21 04:51 UTCGHSA enrichment
  11. 2026-07-21 00:35 UTCGHSA enrichment
  12. 2026-07-20 20:20 UTCGHSA enrichment
  13. 2026-07-20 16:05 UTCGHSA enrichment
  14. 2026-07-20 11:51 UTCGHSA enrichment
  15. 2026-07-20 07:37 UTCGHSA enrichment
  16. 2026-07-20 03:23 UTCGHSA enrichment
  17. 2026-07-19 23:08 UTCGHSA enrichment
  18. 2026-07-19 18:54 UTCGHSA enrichment
  19. 2026-07-19 14:40 UTCGHSA enrichment
  20. 2026-07-19 10:26 UTCGHSA enrichment
  21. 2026-07-19 06:11 UTCGHSA enrichment
  22. 2026-07-19 01:57 UTCGHSA enrichment
  23. 2026-07-18 21:40 UTCGHSA enrichment
  24. 2026-07-18 17:26 UTCGHSA enrichment
  25. 2026-07-18 13:12 UTCEG score recompute
  26. 2026-07-18 13:12 UTCGHSA enrichment
  27. 2026-07-18 10:01 UTCEPSS rescore
  28. 2026-07-18 08:58 UTCGHSA enrichment
  29. 2026-07-18 04:44 UTCGHSA enrichment
  30. 2026-07-18 00:30 UTCGHSA enrichment
  31. 2026-07-17 20:16 UTCGHSA enrichment
  32. 2026-07-17 16:01 UTCGHSA enrichment
  33. 2026-07-17 11:47 UTCGHSA enrichment
  34. 2026-07-17 07:32 UTCEG score recompute
  35. 2026-07-17 07:32 UTCGHSA enrichment
  36. 2026-07-17 03:18 UTCGHSA enrichment
  37. 2026-07-16 23:04 UTCGHSA enrichment
  38. 2026-07-16 18:50 UTCGHSA enrichment
  39. 2026-07-16 17:04 UTCCISA KEV update
  40. 2026-07-16 14:36 UTCGHSA enrichment
  41. 2026-07-16 10:22 UTCGHSA enrichment
  42. 2026-07-16 06:07 UTCGHSA enrichment
  43. 2026-07-16 01:53 UTCGHSA enrichment
  44. 2026-07-15 21:39 UTCGHSA enrichment
  45. 2026-07-15 17:24 UTCGHSA enrichment
  46. 2026-07-15 16:49 UTCCISA KEV update
  47. 2026-07-15 15:04 UTCCISA KEV update
  48. 2026-07-15 13:09 UTCGHSA enrichment
  49. 2026-07-15 08:55 UTCGHSA enrichment
  50. 2026-07-15 04:39 UTCGHSA enrichment
  51. 2026-07-15 00:23 UTCGHSA enrichment
  52. 2026-07-14 20:09 UTCGHSA enrichment
  53. 2026-07-14 18:05 UTCCISA KEV update
  54. 2026-07-14 15:55 UTCGHSA enrichment
  55. 2026-07-14 11:39 UTCGHSA enrichment
  56. 2026-07-14 07:25 UTCGHSA enrichment
  57. 2026-07-14 03:11 UTCGHSA enrichment
  58. 2026-07-13 22:57 UTCGHSA enrichment
  59. 2026-07-13 18:43 UTCGHSA enrichment
  60. 2026-07-13 17:07 UTCCISA KEV update
  61. 2026-07-13 14:29 UTCGHSA enrichment
  62. 2026-07-13 10:14 UTCGHSA enrichment
  63. 2026-07-13 05:59 UTCGHSA enrichment
  64. 2026-07-13 01:44 UTCGHSA enrichment
  65. 2026-07-12 21:29 UTCGHSA enrichment
  66. 2026-07-12 17:15 UTCGHSA enrichment
  67. 2026-07-12 13:00 UTCGHSA enrichment
  68. 2026-07-12 08:45 UTCGHSA enrichment
  69. 2026-07-12 04:31 UTCGHSA enrichment
  70. 2026-07-12 00:17 UTCGHSA enrichment
  71. 2026-07-11 20:02 UTCGHSA enrichment
  72. 2026-07-11 15:47 UTCGHSA enrichment
  73. 2026-07-11 11:32 UTCGHSA enrichment
  74. 2026-07-11 07:18 UTCGHSA enrichment
  75. 2026-07-11 03:03 UTCGHSA enrichment

Publicly available exploits

(10 references)

Working exploit code is in the public domain (1 Metasploit module) (6 GitHub PoCs) (2 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCandknownmaly/CVE-2019-16278
    First seen Nov 26, 2025

    RCE exploit for Nostromo nhttpd ≤ 1.9.6

    Open source ↗
  • Exploit-DBEDB-47837✓ verified
    First seen Jan 1, 2020

    nostromo 1.9.6 - Remote Code Execution

    Open source ↗
  • GitHub PoCaN0mad/CVE-2019-16278-Nostromo_1.9.6-RCE
    First seen Nov 26, 2019

    Python script to exploit RCE in Nostromo nhttpd <= 1.9.6.

    Open source ↗
  • GitHub PoCAnubisSec/CVE-2019-16278
    First seen Nov 22, 2019

    A quick python exploit for the Nostromo 1.9.6 remote code execution vulnerability. Simply takes a host and port that the web server is running on.

    Open source ↗
  • Exploit-DBEDB-47573✓ verified
    First seen Nov 1, 2019

    Nostromo - Directory Traversal Remote Command Execution (Metasploit)

    Open source ↗
  • Metasploitexploit/multi/http/nostromo_code_exec✓ verified
    First seen Oct 20, 2019

    Nostromo Directory Traversal Remote Command Execution

    Open source ↗
  • GitHub PoCimjdl/CVE-2019-16278-PoC
    First seen Oct 15, 2019

    CVE-2019-16728 Proof of Concept

    Open source ↗
  • GitHub PoCjas502n/CVE-2019-16278
    First seen Oct 15, 2019

    Directory transversal to remote code execution

    Open source ↗
  • GitHub PoCianxtianxt/CVE-2019-16278
    First seen Oct 15, 2019

    CVE-2019-16278Nostromo httpd命令执行

    Open source ↗
  • Nucleihttp/cves/2019/CVE-2019-16278.yaml
    First seen Jan 1, 2019

    nostromo 1.9.6 - Remote Code Execution

    Open source ↗

Frequently asked(6)

What is CVE-2019-16278?
CVE-2019-16278 is a critical vulnerability published on October 14, 2019. Directory Traversal in the function http_verify in nostromo nhttpd through 1.9.6 allows an attacker to achieve remote code execution via a crafted HTTP request.
When was CVE-2019-16278 disclosed?
CVE-2019-16278 was first published in the National Vulnerability Database on October 14, 2019, with the most recent update on November 6, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-16278 actively exploited?
Yes. CISA added CVE-2019-16278 to the Known Exploited Vulnerabilities catalog on November 7, 2024, affecting Nostromo nhttpd. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2019-16278?
CVE-2019-16278 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2019-16278?
CVE-2019-16278 affects Nostromo nhttpd. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2019-16278?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-16278, 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.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2019-16278

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