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VulnerabilityPublished Updated

CVE-2024-50623: Cleo Multiple Products · Unrestricted File Upload

Affects Cleo Multiple ProductsSource CVE Database V5

0

Exploited in the wild · used in ransomware campaigns · KEV due 3 Jan 2025 · public detection template (Nuclei) · 98% EPSS : apply the vendor's fix or mitigations to Cleo Multiple Products now.

Data as of 26 Oct 2026, 13:47 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
KEV deadline
 US federal agencies must patch by this date; a sensible deadline for everyone else. Other KEV due dates
Ransomware
Used in ransomware campaigns
EPSS
98.6% chance of exploitation in 30 days – higher than 99% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CISA SSVC
Exploitation
Reliable evidence of use in the wild by real attackers
Automatable
Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact
Total control over the software or total information disclosure

CISA SSVC assessment, 2026-07-31.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

t = 0 is the CVE’s publication on cve.org

  1. Disclosed: evidence found.

    CVE published 27 Oct 2024

  2. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  3. Exploited in the wild: evidence found.

    Listed in CISA KEV 47 days after disclosure

  4. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

Timeline

  1. CVE published

    on cve.org

    , t = 0

  2. Added to CISA KEV (opens in a new tab)

    exploitation confirmed · ransomware use known

    , 47 days after disclosure

  3. KEV remediation due

    US federal deadline

    , 68 days after disclosure

  4. CISA SSVC assessment

    exploitation active

    , 1.8 years after disclosure

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CISA KEV (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Description

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.

References

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