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CVE-2019-16278

Nostromo nhttpd Directory Traversal

9.8 CRITICALActively exploited (CISA KEV)Public exploitEPSS 99.0%
  1. Published14 Oct 2019
  2. Added to CISA KEV7 Nov 2024
  3. Remediation due28 Nov 2024
Actively exploited (CISA KEV)

Nostromo nhttpd contains a directory traversal vulnerability in the http_verify() function in a non-chrooted nhttpd server allowing for remote code execution.

Added to KEV: 7 Nov 2024Federal remediation due: 28 Nov 2024

Description

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 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Nazgul Nostromo Nhttpd< 1.9.7

Remediation

Fixed in
Nazgul Nostromo Nhttpd≥ 1.9.7

References

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Frequently asked

Is CVE-2019-16278 being actively exploited?

Yes. CVE-2019-16278 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 7 Nov 2024.

How severe is CVE-2019-16278?

CVE-2019-16278 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 99.0% probability of exploitation.

Which products are affected by CVE-2019-16278?

Affected products include Nazgul Nostromo Nhttpd.

How do I fix CVE-2019-16278?

Upgrade affected software to a fixed version, for example Nazgul Nostromo Nhttpd 1.9.7 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2019-16278 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.