CVE-2024-57728: SimpleHelp Path Traversal Vulnerability

In short

SimpleHelp SimpleHelp has a weakness classified as link following (CWE-59). CISA added it to its Known Exploited Vulnerabilities catalog on 2026-04-24. NVD lists CVSS 3.1 at 7.2 HIGH. CISA reports known ransomware campaign use.

What it is

“SimpleHelp contains a path traversal vulnerability that allows admin users to upload arbitrary files anywhere on the file system by uploading a crafted zip file (i.e. zip slip). This can be exploited to execute arbitrary code on the host in the context of the SimpleHelp server user.” — CISA KEV, retrieved 2026-11-01

“SimpleHelp remote support software v5.5.7 and before allows admin users to upload arbitrary files anywhere on the file system by uploading a crafted zip file (i.e. zip slip). This can be exploited to execute arbitrary code on the host in the context of the SimpleHelp server user.” — NVD, retrieved 2026-11-01

Who is affected

SimpleHelp SimpleHelp. NVD lists the following versions as affected:

• Versions before 5.5.8

Exploitation status

CISA KEV added: 2026-04-24. Known ransomware campaign use: Known (reported by CISA). Due date CISA set for US federal civilian agencies: 2026-05-08.

Scores

NVD CVSS 3.1: 7.2 HIGH; vector CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H; source [email protected].

EPSS by FIRST: 64.47%; percentile 99.24; score date 2026-10-31. EPSS estimates the probability of exploitation in the next 30 days.

CWE: CWE-59, CWE-22.

Timeline

CISA required action

“Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.” — CISA KEV

What to do

• Confirm whether you run SimpleHelp SimpleHelp and which version.
• Apply the vendor update or mitigation in the advisory.
• Follow CISA’s required action.
• Review the vendor guidance on signs of compromise.
• Track the fix through completion.

References

• Vendor Advisory: https://simple-help.com/kb---security-vulnerabilities-01-2025#security-vulnerabilities-in-simplehelp-5-5-7-and-earlier
• Third Party Advisory: https://www.horizon3.ai/attack-research/disclosures/critical-vulnerabilities-in-simplehelp-remote-support-software/
• Third Party Advisory: https://www.trendmicro.com/vinfo/us/security/news/ransomware-spotlight/ransomware-spotlight-dragonforce
• NVD detail
• CVE.org record
• CISA KEV catalog

Sources and dates

CISA Known Exploited Vulnerabilities Catalog, version 2026.10.30; retrieved 2026-11-01. CISA KEV data: CC0 1.0. No endorsement by CISA.

NVD retrieved: 2026-11-01. This product uses the NVD API but is not endorsed or certified by the NVD.

EPSS scores by FIRST; score date 2026-10-31.