CVE-2019-16278 (GCVE-0-2019-16278)
Vulnerability from cvelistv5 – Published: 2019-10-14 16:06 – Updated: 2025-10-21 23:45Summary
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.
Severity
9.8 (Critical)
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-08-20 03:56 UTC
CWE
- n/a
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
6 references
| URL | Tags |
|---|---|
| http://www.nazgul.ch/dev/nostromo_cl.txt | x_refsource_MISC |
| https://sp0re.sh | x_refsource_MISC |
| https://git.sp0re.sh/sp0re/Nhttpd-exploits | x_refsource_MISC |
| http://packetstormsecurity.com/files/155045/Nostr… | x_refsource_MISC |
| http://packetstormsecurity.com/files/155802/nostr… | x_refsource_MISC |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| nazgul | nostromo_nhttpd |
Affected:
0 , ≤ 1.9.6
(custom)
cpe:2.3:a:nazgul:nostromo_nhttpd:*:*:*:*:*:*:*:* |
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 0cfe8a6e-5393-48f7-ac75-92523ecf6e4f
Exploited: Yes
Timestamps
First Seen: 2024-11-07
Asserted: 2024-11-07
Scope
Notes: Nostromo nhttpd Directory Traversal Vulnerability | Affected: Nostromo / nhttpd | Description: Nostromo nhttpd contains a directory traversal vulnerability in the http_verify() function in a non-chrooted nhttpd server allowing for remote code execution. | Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. | Due date: 2024-11-28 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://www.nazgul.ch/dev/nostromo_cl.txt ; https://nvd.nist.gov/vuln/detail/CVE-2019-16278
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-22 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | nhttpd |
| Due Date | 2024-11-28 |
| Date Added | 2024-11-07 |
| Vendorproject | Nostromo |
| Vulnerabilityname | Nostromo nhttpd Directory Traversal Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-10-02 08:09 CEST
| Updated: 2026-10-02 08:09 CEST
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: afbacb0c-1286-4edd-a8d4-bd2d182b8e46
Exploited: Yes
Timestamps
First Seen: 2024-11-07
Asserted: 2024-11-07
Scope
Notes: 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... | Affected: Nostromo / nhttpd | CVSS: 9.8 (CRITICAL) | EPSS: 0.99033 | Used in malware: unknown | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: previdian
Details
| Feed | Previdian (previdian.com) |
|---|---|
| Title | 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... |
| Cve Id | CVE-2019-16278 |
| Vendor | Nostromo |
| Ghsa Id | None |
| Product | nhttpd |
| Added Date | 2024-11-07T00:00:00.000Z |
| Cvss Score | 9.8 |
| Epss Score | 0.99033 |
| Previous Ids | |
| Cvss Severity | CRITICAL |
| Virtual Patch | False |
| Cvss Estimated | False |
| Epss Percentile | 0.99931 |
| Used In Malware | unknown |
| Vulnerability Id | CVE-2019-16278 |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | False |
References
Created: 2026-10-02 09:11 CEST
| Updated: 2026-10-02 09:11 CEST
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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