Page generated: 08 Nov 2026, 08:00 UTC
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CVE-2024-50623

In Cleo Harmony before 5.8.0.21, VLTrader before 5.8.0.21, and LexiCom before 5.8.0.21, there is an unrestricted file upload and download that could lead to remote code execution.

CVSS 9.8 (CRITICAL) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
2.3/10
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: 98.61%: +0.49

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

Sources: 18 documents and public datasets.

Hype components

Headline sample (25%)
80/100
Press, 30 days (60%)
5/100
Grounded branding (15%)
0/100
HYPE TOTAL23/100

Sources and documents

shattered.io
Press · 07 Oct 2026, 07:00 · Aon Ransomware Claim Reopens Cleo CVE-2024-50623 [2026] - shattered.io
Recorded Future
Press · 21 Jan 2025, 08:00 · Cleo MFT Vulnerability CVE-2024-50623: Critical RCE Risk - Recorded Future
Huntress
Press · 06 Jan 2025, 08:00 · Threat Advisory: Oh No Cleo! Cleo Software Actively Being Exploited in the Wild - Huntress
Check Point Research
Press · 30 Dec 2024, 08:00 · 30th December – Threat Intelligence Report - Check Point Research
Cybersecurity Dive
Press · 19 Dec 2024, 08:00 · Mandiant traces Cleo file-transfer exploits back to October - Cybersecurity Dive
See all 18 source documents
Cybersecurity Dive
Press · 16 Dec 2024, 08:00 · Cleo releases CVE for actively exploited flaw in file-transfer software - Cybersecurity Dive
SecurityWeek
Press · 16 Dec 2024, 08:00 · CVE Assigned to Cleo Vulnerability as Cl0p Ransomware Group Takes Credit for Exploitation - SecurityWeek
SOCRadar
Press · 16 Dec 2024, 08:00 · Cleo File Transfer Flaws – Cl0P's Latest Attack Vector - SOCRadar
TechTarget
Press · 16 Dec 2024, 08:00 · Cleo zero-day vulnerability gets CVE as attacks continue - TechTarget
TechTarget
Press · 16 Dec 2024, 08:00 · Cleo zero-day vulnerability gets CVE as attacks continue - TechTarget
BleepingComputer
Press · 15 Dec 2024, 08:00 · Clop ransomware claims responsibility for Cleo data theft attacks - BleepingComputer
SOC Prime
Press · 12 Dec 2024, 08:00 · CVE-2024-50623 Detection: Attackers Actively Exploit a RCE Vulnerability in Cleo Harmony, VLTrader, and LexiCom File Transfer Products - SOC Prime
The Hacker News
Press · 10 Dec 2024, 08:00 · Cleo File Transfer Vulnerability Under Exploitation – Patch Pending, Mitigation Urged - The Hacker News
Help Net Security
Press · 10 Dec 2024, 08:00 · Attackers actively exploiting flaw(s) in Cleo file transfer software (CVE-2024-50623) - Help Net Security
The Record from Recorded Future News
Press · 10 Dec 2024, 08:00 · Multiple Cleo file transfer products being exploited by hackers - The Record from Recorded Future News
Rapid7
Press · 10 Dec 2024, 08:00 · Widespread Exploitation of Cleo File Transfer Software (CVE-2024-55956) - Rapid7
BleepingComputer
Press · 10 Dec 2024, 08:00 · New Cleo zero-day RCE flaw exploited in data theft attacks - BleepingComputer
TechTarget
Press · 09 Dec 2024, 08:00 · Attackers exploit vulnerability in Cleo file transfer software - TechTarget

Score evolution

● Hype   ● Reality

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

First record: hype 2.3 · reality 9.0 (2026-11-02 15:13). The curve appears once the score changes.

Public exploit evidence

4

Public exploit entries / repo candidates

See 4 repos with metrics
RepositoryStarsForksLanguageUpdated
watchtowrlabs/CVE-2024-50623257Python11 Dec 2024, 14:23
verylazytech/CVE-2024-5062373Shell23 Dec 2024, 09:16
iSee857/Cleo-CVE-2024-50623-PoC50Python01 Apr 2025, 08:50
congdong007/CVE-2024-50623-poc00Python01 Apr 2025, 23:07
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 98.6%
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 13:59:19.971378+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
Published
27 Oct 2024, 00:00
First press mention
09 Dec 2024, 08:00
Added to the CISA KEV catalog
13 Dec 2024, 00:00
Latest press mention
07 Oct 2026, 07:00
Score calculated
05 Nov 2026, 13:59
PoCs on GitHub
4 repositories