Detections
Analytics

CVE-2024-55956

critical

Description

In Cleo Harmony before 5.8.0.24, VLTrader before 5.8.0.24, and LexiCom before 5.8.0.24, an unauthenticated user can import and execute arbitrary Bash or PowerShell commands on the host system by leveraging the default settings of the Autorun directory.

References

https://www.bleepingcomputer.com/news/security/harvard-investigating-breach-linked-to-oracle-zero-day-exploit/

https://www.bleepingcomputer.com/news/security/oracle-patches-ebs-zero-day-exploited-in-clop-data-theft-attacks/

https://www.bleepingcomputer.com/news/security/clop-extortion-emails-claim-theft-of-oracle-e-business-suite-data/

https://www.hipaajournal.com/cierant-corporation-data-breach/

https://thehackernews.com/2025/04/google-reports-75-zero-days-exploited.html

https://www.bleepingcomputer.com/news/security/food-giant-wk-kellogg-discloses-data-breach-linked-to-clop-ransomware/

https://www.securityweek.com/western-alliance-bank-discloses-data-breach-linked-to-cleo-hack/

https://hackread.com/ransomware-attacks-hit-record-high-in-february-2025/

https://www.securityweek.com/cve-assigned-to-cleo-vulnerability-as-cl0p-ransomware-group-takes-credit-for-exploitation/

https://www.bleepingcomputer.com/news/security/clop-ransomware-claims-responsibility-for-cleo-data-theft-attacks/

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-55956

https://support.cleo.com/hc/en-us/articles/28408134019735-Cleo-Product-Security-Update

https://support.cleo.com/hc/en-us/articles/28408134019735-Cleo-Product-Security-Advisory-CVE-Pending

Details

Source: Mitre, NVD

Published: 2024-12-13

Updated: 2025-11-04

Known Exploited Vulnerability (KEV)

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

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

Severity: Critical

EPSS

EPSS: 0.921

Vulnerability Watch

Tenable Research has classified this CVE under the following Vulnerability Watch classification, which includes active and historical (inactive) classifications. You can learn more about these classifications on our blog.

Vulnerability of Interest