How severe is CVE-2024-48859?

CVE-2024-48859 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2024-48859 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-48859?

CVE-2024-48859 primarily affects Qnap Qts. In total, 46 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-48859?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2024-48859 have an EU (EUVD) identifier?

Yes. CVE-2024-48859 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-43209.

When was CVE-2024-48859 published?

CVE-2024-48859 was published on 2024-12-06 and last updated on 2026-06-17.

CVE-2024-48859

CVE-2024-48859 is a critical-severity vulnerability in Qnap Qts with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v4: 5.3
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-43209
Weakness: CWE-287
Affected product: Qnap Qts
Published: 2024-12-06
Last modified: 2026-06-17

Description

An improper authentication vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow remote attackers to compromise the security of the system. We have already fixed the vulnerability in the following versions: QTS 5.1.9.2954 build 20241120 and later QTS 5.2.2.2950 build 20241114 and later QuTS hero h5.1.9.2954 build 20241120 and later QuTS hero h5.2.2.2952 build 20241116 and later

Frequently asked questions

What is CVE-2024-48859?: An improper authentication vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow remote attackers to compromise the security of the system. We have already fixed the vulnerability in the following versions: QTS 5.1.9.2954 build 20241120 and later QTS 5.2.2.2950 build 20241114 and later QuTS hero h5.1.9.2954 build 20241120 and later QuTS hero h5.2.2.2952 build 20241116 and later
How severe is CVE-2024-48859?: CVE-2024-48859 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2024-48859 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-48859?: CVE-2024-48859 primarily affects Qnap Qts. In total, 46 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-48859?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-48859 have an EU (EUVD) identifier?: Yes. CVE-2024-48859 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-43209.
When was CVE-2024-48859 published?: CVE-2024-48859 was published on 2024-12-06 and last updated on 2026-06-17.

References

https://www.qnap.com/en/security-advisory/qsa-24-49

Affected products (46)

cpe:2.3:o:qnap:qts:5.1.0.2348:build_20230325:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:5.1.0.2399:build_20230515:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:5.1.0.2418:build_20230603:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:5.1.0.2444:build_20230629:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:5.1.0.2466:build_20230721:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:5.1.1.2491:build_20230815:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:5.1.2.2533:build_20230926:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:5.1.3.2578:build_20231110:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:5.1.4.2596:build_20231128:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:5.1.5.2645:build_20240116:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:5.1.5.2679:build_20240219:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:5.1.6.2722:build_20240402:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:5.1.7.2770:build_20240520:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:5.1.8.2823:build_20240712:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:5.2.0.2737:build_20240417:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:5.2.0.2744:build_20240424:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:5.2.0.2782:build_20240601:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:5.2.0.2802:build_20240620:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:5.2.0.2823:build_20240711:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:5.2.0.2851:build_20240808:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:5.2.0.2860:build_20240817:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:5.2.1.2930:build_20241025:*:*:*:*:*:*
cpe:2.3:o:qnap:quts_hero:h5.1.0.2409:build_20230525:*:*:*:*:*:*
cpe:2.3:o:qnap:quts_hero:h5.1.0.2424:build_20230609:*:*:*:*:*:*
cpe:2.3:o:qnap:quts_hero:h5.1.0.2453:build_20230708:*:*:*:*:*:*
cpe:2.3:o:qnap:quts_hero:h5.1.0.2466:build_20230721:*:*:*:*:*:*
cpe:2.3:o:qnap:quts_hero:h5.1.1.2488:build_20230812:*:*:*:*:*:*
cpe:2.3:o:qnap:quts_hero:h5.1.2.2534:build_20230927:*:*:*:*:*:*
cpe:2.3:o:qnap:quts_hero:h5.1.3.2578:build_20231110:*:*:*:*:*:*
cpe:2.3:o:qnap:quts_hero:h5.1.4.2596:build_20231128:*:*:*:*:*:*
cpe:2.3:o:qnap:quts_hero:h5.1.5.2647:build_20240118:*:*:*:*:*:*
cpe:2.3:o:qnap:quts_hero:h5.1.5.2680:build_20240220:*:*:*:*:*:*
cpe:2.3:o:qnap:quts_hero:h5.1.6.2734:build_20240414:*:*:*:*:*:*
cpe:2.3:o:qnap:quts_hero:h5.1.7.2770:build_20240520:*:*:*:*:*:*
cpe:2.3:o:qnap:quts_hero:h5.1.7.2788:build_20240607:*:*:*:*:*:*
cpe:2.3:o:qnap:quts_hero:h5.1.7.2794:build_20240613:*:*:*:*:*:*
cpe:2.3:o:qnap:quts_hero:h5.1.8.2823:build_20240712:*:*:*:*:*:*
cpe:2.3:o:qnap:quts_hero:h5.2.0.2737:build_20240417:*:*:*:*:*:*
cpe:2.3:o:qnap:quts_hero:h5.2.0.2782:build_20240601:*:*:*:*:*:*
cpe:2.3:o:qnap:quts_hero:h5.2.0.2789:build_20240607:*:*:*:*:*:*

More vulnerabilities in Qnap Qts

CVE-2024-32766 — Critical (CVSS 10.0): An OS command injection vulnerability has been reported to affect several QNAP operating system versions. If exploited,…
CVE-2017-7876 — Critical (CVSS 10.0): This command injection vulnerability in QTS allows attackers to run arbitrary commands in the compromised application.…
CVE-2025-66276 — Critical (CVSS 9.8): QuTS hero is not affected. We have already fixed the vulnerability in the following version: QTS 5.2.7.3256 build…
CVE-2025-66277 — Critical (CVSS 9.8): A link following vulnerability has been reported to affect several QNAP operating system versions. The remote attackers…
CVE-2025-62849 — Critical (CVSS 9.8): An SQL injection vulnerability has been reported to affect several QNAP operating system versions. The remote attackers…
CVE-2025-59385 — Critical (CVSS 9.8): An authentication bypass by spoofing vulnerability has been reported to affect several QNAP operating system versions.…

All CVEs affecting Qnap Qts →

Other CWE-287 (Improper Authentication) vulnerabilities

CVE-2026-20317 — Critical (CVSS 10.0): As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Workload engineering…
CVE-2026-19977 — Critical (CVSS 10.0): A vulnerability was detected in EFM ipTIME A3004T 14.19.0. The affected element is the function…
CVE-2026-59500 — Critical (CVSS 10.0): CWE-287: Improper Authentication
CVE-2024-27253 — Critical (CVSS 10.0): IBM DOORS Next 7.0.3 through 7.0.3 Interim Fix 018 could allow an authenticated user to bypass security logic to…
CVE-2026-56162 — Critical (CVSS 10.0): Improper authentication in Azure SQL Database allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-62825 — Critical (CVSS 10.0): Improper authentication in Azure Key Vault allows an unauthorized attacker to elevate privileges over a network.

Browse all CWE-287 (Improper Authentication) vulnerabilities →