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Vulnerabilities

Vulnerability · CVE-2024-56805

A buffer overflow vulnerability has been reported to affect several QNAP operating system versions.

Published Jun 6, 2025 · catalog updated Jun 6, 2025 · QNAP Systems Inc. QTS

Check if you run it

No confirmed exploitation is on record for CVE-2024-56805. EPSS is 0.43%. Act only if a listed version of QNAP Systems Inc. QTS is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.43%
Remediation
Version ranges on file
Affected products
vendor QNAP Systems Inc. QTS 5.2.x <5.2.4.3079 build 20250321

A buffer overflow vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow remote attackers who have gained user access to modify memory or crash processes. We have already fixed the vulnerability in the following versions: QTS 5.2.4.3079 build 20250321 and later QuTS hero h5.2.4.3079 build 20250321 and later

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor QNAP Systems Inc. QTS 5.2.x <5.2.4.3079 build 202503215.2.x <5.2.4.3079 build 20250321

How to fix CVE-2024-56805

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2024-56805. EPSS is 0.43%. Act only if a listed version of QNAP Systems Inc. QTS is installed.

Which versions are affected?

Compare what you have installed with QNAP Systems Inc. QTS 5.2.x <5.2.4.3079 build 20250321 5.2.x <5.2.4.3079 build 20250321. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.43%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 6, 2025 · EUVD

    Detected

    A buffer overflow vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow remote attackers who have gained user access to modify memory or crash processes. We have already fixed the vulnerability in the following versions: QTS 5.2.4.3079 build 20250321 and later QuTS hero h5.2.4.3079 build 20250321 and later

  2. Jun 6, 2025 · EUVD

    Updated

    A buffer overflow vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow remote attackers who have gained user access to modify memory or crash processes. We have already fixed the vulnerability in the following versions: QTS 5.2.4.3079 build 20250321 and later QuTS hero h5.2.4.3079 build 20250321 and later

Sources

  • CVE.orgVulnerability recordCVE-2024-56805

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2024-56805

    30-day exploitation probability 0.4%

    first.org
  • EUVDVulnerability recordEUVD-2024-54653

    A buffer overflow vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow remote attackers who have gained user access to modify memory or crash processes. We have already fixed the vulnerability in the followi

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.