CVE-2024-57728
CVE-2024-57728 is a security flaw in SimpleHelp, remote-support software IT providers use to manage their customers’ computers. Attackers can run their own code on SimpleHelp. The US Cybersecurity and Infrastructure Security Agency (CISA) added it to its catalog of flaws known to be used in attacks on 24 Apr 2026, and says ransomware gangs have used it.[1]
SimpleHelp is business software or equipment. Most families won’t have it, but attackers break into it to get inside companies, and from there to what those companies hold about their customers, patients and staff. SimpleHelp has published a fix or advice.
Description
CISA calls it a path traversal in SimpleHelp SimpleHelp. In its words: “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.”[1]
The underlying weakness is path traversal (CWE-22), in MITRE’s list of common software weaknesses.[2]
It scores 7.2 out of 10 on the Common Vulnerability Scoring System, which rates it high, scored by NVD using CVSS 3.1.[2]
Affected versions
NVD’s record doesn’t list version ranges for it; SimpleHelp’s advisory has them[3]. CISA names the product as SimpleHelp SimpleHelp.
Most families won’t have SimpleHelp; it’s for whoever looks after IT at work.
Exploitation
CISA added it to its catalog of known exploited vulnerabilities on 24 Apr 2026, 464 days after it was made public. CISA lists a flaw only when it has reliable evidence of it being exploited, and gave US federal agencies until 8 May 2026 to fix it.[1] CISA says ransomware gangs have used it.
FIRST’s Exploit Prediction Scoring System, which estimates how likely a flaw is to be used in attacks in the next 30 days from what it sees across the internet, puts it at 64%. That’s in the top 1% of the flaws it scores.[4]
CISA assesses it as not automatable: each attack takes some work.
CISA doesn’t say who was attacked, or how.
Fix
SimpleHelp has published a fix or advice.[3] CISA’s 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.”[1]
- Check whether you use it.SimpleHelp is business software or equipment, so most families won’t have it. If you run a business, or work from home on company equipment, ask whoever looks after your IT.
- Send this page to your IT person.Ask them to confirm it’s fixed, or not in use. CISA gave US government agencies until 8 May 2026 to fix it.
- If it can’t be fixed, take it offline.CISA’s advice when there’s no fix is to stop using the product, or take it off the internet, until there is one.
You can’t fix someone else’s server, but you can watch for what follows a break-in like this: a breach notice, a password reset you didn’t ask for, or a scam message that knows things it shouldn’t. HARD watches for those for you and your family.
Timeline
| Date | Event |
|---|---|
| The flaw is made public in the National Vulnerability Database, with a severity score of 7.2.[2] | |
| CISA adds it to its catalog of flaws known to be used in attacks, noting that ransomware gangs have used it.[1] | |
| CISA’s deadline for US government agencies to fix it.[1] | |
| FIRST puts the odds of it being used in attacks in the next 30 days at 64%.[4] |
See also
Other SimpleHelp flaws
- CVE-2026-48558: authentication bypass ·
- CVE-2024-57726: missing authorization ·
- CVE-2024-57727: path traversal ·
Other path traversal flaws
- CVE-2025-61624, Fortinet products: path traversal ·
- CVE-2021-3199, ONLYOFFICE Docs: server path traversal ·
- CVE-2026-104286, Fortinet FortiMail: path traversal ·
- CVE-2026-93616, Check Point products: path traversal ·
- CVE-2026-66384, JFrog Artifactory: improper limitation of a pathname to a restricted directory ·
Added the same day
- CVE-2025-29635, D-Link DIR-823X: command injection ·
- CVE-2024-7399, Samsung MagicINFO 9 Server: path traversal ·
- CVE-2024-57726, SimpleHelp: missing authorization ·
Every SimpleHelp flaw on CISA’s list · Everything added in April 2026
References
- ^ Cybersecurity and Infrastructure Security Agency. “SimpleHelp Path Traversal Vulnerability”. Known Exploited Vulnerabilities Catalog, added 24 Apr 2026.
- ^ National Institute of Standards and Technology. “CVE-2024-57728 Detail”. National Vulnerability Database, published 15 Jan 2025.
- ^ SimpleHelp. Advisories and fixes: simple-help.com.
- ^ FIRST. “Exploit Prediction Scoring System”. EPSS 0.645, percentile 99.2, 31 Oct 2026.
- CVE Program. “CVE-2024-57728”. The official CVE record.
This article is built from CISA’s catalog (version 2026.10.30), NVD’s record and FIRST’s scores, kept in HARD’s database and checked every morning. The plain English is HARD’s.