Page generated: 08 Nov 2026, 09:28 UTC
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CVE-2023-40044

In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a pre-authenticated attacker could leverage a .NET deserialization vulnerability in the Ad Hoc Transfer module to execute remote commands on the underlying WS_FTP Server operating system.

CVSS 10.0 (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 10: +1.50
  • Fresh EPSS: 90.35%: +0.45

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

Sources: 11 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

Rapid7
Press · 16 Jun 2026, 07:00 · Rapid7 Analysis: CVE-2023-40044 - Rapid7
SentinelOne
Press · 18 Jan 2024, 08:00 · Threat Actors Actively Exploiting Progress WS_FTP via Multiple Attack Chains - SentinelOne
EclecticIQ Blog
Press · 25 Oct 2023, 07:00 · Cisco IOS XE Web UI Privilege Escalation Vulnerability; Sandworm Targets Ukrainian Telecom - EclecticIQ Blog
TechTarget
Press · 13 Oct 2023, 07:00 · Ransomware gang targets critical Progress WS_FTP Server bug - TechTarget
BleepingComputer
Press · 12 Oct 2023, 07:00 · Ransomware attacks now target unpatched WS_FTP servers - BleepingComputer
See all 11 source documents
Arctic Wolf
Press · 03 Oct 2023, 07:00 · Recommendations for CVE-2023-40044, CVE-2023-42657 - Arctic Wolf
Huntress
Press · 02 Oct 2023, 07:00 · Critical Vulnerabilities: WS_FTP Exploitation - Huntress
BleepingComputer
Press · 02 Oct 2023, 07:00 · Exploit available for critical WS_FTP bug exploited in attacks - BleepingComputer
TechCrunch
Press · 02 Oct 2023, 07:00 · Progress, the company behind MOVEit, patches new actively exploited security flaws - TechCrunch
Rapid7
Press · 29 Sep 2023, 07:00 · Critical Vulnerabilities in WS_FTP Server - Rapid7
BleepingComputer
Press · 28 Sep 2023, 07:00 · Progress warns of maximum severity WS_FTP Server vulnerability - BleepingComputer

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 15:13). The curve appears once the score changes.

Public exploit evidence

1

Public exploit entries / repo candidates

See 1 repos with metrics
RepositoryStarsForksLanguageUpdated
getdrive/PoC7315Ruby12 Aug 2024, 07:34
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 10; EPSS 90.4%
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 13:58:57.142227+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
Published
27 Sep 2023, 14:48
First press mention
28 Sep 2023, 07:00
Added to the CISA KEV catalog
05 Oct 2023, 00:00
Latest press mention
16 Jun 2026, 07:00
Score calculated
05 Nov 2026, 13:58
PoCs on GitHub
1 repositories