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Fencer Vulns
critical 9.8

CVE-2019-16278 kev in the critical feed json

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

published 2019-10-14 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-7077

cvss
9.8
version 3.1, CNA
cisa kev
Exploited
added 2024-11-07
epss
99.0%
EPSS 99.0% chance of exploitation in 30 days, percentile 99.9%
public exploits
3
Metasploit, Exploit-DB, plus a Nuclei check

Summary

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.

Patch / fix

cisa required action Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

  • nazgul nostromo_nhttpd 1.9.7

Timeline

  1. Published
  2. First public exploit (Metasploit exploit/multi/http/nostromo_code_exec)
  3. Added to CISA KEV
  4. CISA patch deadline
  5. CISA SSVC: exploitation active

Known exploited

Added
2 y ago
Patch by
2024-11-28 (23 mo ago)
Ransomware
Not known
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Vendor, product
Nostromo, nhttpd
CISA name
Nostromo nhttpd Directory Traversal Vulnerability

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
yes
Technical impact
total
Assessed
14 mo ago

Exploit prediction

99.03% chance of exploitation in the next 30 days, higher than 99.9% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Metasploit exploit/multi/http/nostromo_code_exec Nostromo Directory Traversal Remote Command Execution metasploit exploit, good rank, 2019-10-20
  • EDB-47837 nostromo 1.9.6 - Remote Code Execution remote, 2020-01-01
  • EDB-47573 Nostromo - Directory Traversal Remote Command Execution (Metasploit) remote, 2019-11-01
  • Nuclei template nostromo 1.9.6 - Remote Code Execution nuclei detection template
  • git.sp0re.sh https://git.sp0re.sh/sp0re/Nhttpd-exploits referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/155045/Nostromo-1.9.6-Directory-Traversal-Remote-Command-Execution.html referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/155802/nostromo-1.9.6-Remote-Code-Execution.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • nazgul nostromo_nhttpd

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.