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CVE-2019-16278

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 9.8 (CRITICAL) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
9.0/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 9.8: +1.47
  • Fresh EPSS: 99.03%: +0.50

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 4 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

cyfirma
Press · 20 Aug 2025, 07:00 · EXECUTIVE THREAT LANDSCAPE REPORT : SAUDI ARABIA - cyfirma
Security Affairs
Press · 17 Sep 2020, 07:00 · APT41 actors charged for attacks on more than 100 victims globally - Security Affairs
BleepingComputer
Press · 17 Sep 2020, 07:00 · U.S. charges Chinese Winnti hackers for attacking 100+ companies - BleepingComputer
SecurityWeek
Press · 16 Sep 2020, 07:00 · U.S. Charges Alleged Hackers of Chinese APT41 Group for Attacks on 100 Firms - SecurityWeek

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 9.0 (2026-11-02 15:12). The curve appears once the score changes.

Public exploit evidence

2

Public exploit entries / repo candidates

See 2 repos with metrics
RepositoryStarsForksLanguageUpdated
imjdl/CVE-2019-16278-PoC91Python15 Oct 2019, 09:28
andknownmaly/CVE-2019-1627830Python26 Nov 2025, 14:49
Public exploit evidence
Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 9.8; EPSS 99.0%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
network access, no prior privileges, no user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:58:05.890020+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
Published
14 Oct 2019, 16:06
First press mention
16 Sep 2020, 07:00
Added to the CISA KEV catalog
07 Nov 2024, 00:00
Latest press mention
20 Aug 2025, 07:00
Score calculated
05 Nov 2026, 13:58
PoCs on GitHub
2 repositories