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CVE-2024-1708

From Exploited flaws, HARD’s guide to the flaws being used in attacks · Checked
This article is about a flaw in ConnectWise ScreenConnect. For every flaw being used in attacks, see Exploited flaws; for ConnectWise’s, see ConnectWise flaws being used in attacks.

CVE-2024-1708 is a security flaw in ConnectWise ScreenConnect, remote-support software IT providers use to manage their customers’ computers. Attackers can read files on ConnectWise ScreenConnect that should be out of reach. The US Cybersecurity and Infrastructure Security Agency (CISA) added it to its catalog of flaws known to be used in attacks on 28 Apr 2026, and says ransomware gangs have used it.[1]

ConnectWise ScreenConnect 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. ConnectWise has published a fix or advice.

Description

CISA calls it a path traversal in ConnectWise ScreenConnect. In its words: “ConnectWise ScreenConnect contains a path traversal vulnerability which could allow an attacker to execute remote code or directly impact confidential data and critical systems.”[1]

The underlying weakness is path traversal (CWE-22), in MITRE’s list of common software weaknesses.[2]

It scores 8.4 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; ConnectWise’s advisory has them[3]. CISA names the product as ConnectWise ScreenConnect.

Most families won’t have ConnectWise ScreenConnect; it’s for whoever looks after IT at work.

Exploitation

CISA added it to its catalog of known exploited vulnerabilities on 28 Apr 2026, 797 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 12 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 95%. 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

ConnectWise 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]

  1. Check whether you use it.ConnectWise ScreenConnect 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.
  2. Send this page to your IT person.Ask them to confirm it’s fixed, or not in use. CISA gave US government agencies until 12 May 2026 to fix it.
  3. 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

DateEvent
The flaw is made public in the National Vulnerability Database, with a severity score of 8.4.[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 95%.[4]

See also

Other ConnectWise ScreenConnect flaws

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-2026-32202, Microsoft Windows: protection mechanism failure ·

Every ConnectWise flaw on CISA’s list · Everything added in April 2026

References

  1. ^ Cybersecurity and Infrastructure Security Agency. “ConnectWise ScreenConnect Path Traversal Vulnerability”. Known Exploited Vulnerabilities Catalog, added 28 Apr 2026.
  2. ^ National Institute of Standards and Technology. “CVE-2024-1708 Detail”. National Vulnerability Database, published 21 Feb 2024.
  3. ^ ConnectWise. Advisories and fixes: connectwise.com.
  4. ^ FIRST. “Exploit Prediction Scoring System”. EPSS 0.954, percentile 99.9, 31 Oct 2026.
  5. CVE Program. “CVE-2024-1708”. 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.