CVE-2024-48866 | QTS, QuTS hero

An improper handling of URL encoding (Hex Encoding) vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow remote attackers to run the system into unexpected state. 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

Published: 2024-12-06 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2024-48866 is rated Low Risk (20.7/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.42%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2024-48866

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.65% 0.42% -0.22%
2 2026-05-09 0.33% 0.65% +0.31%
3 2026-01-19 — 0.33% —

Full EPSS history (13 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-48866

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
2.3 4.0 LOW
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network.
Attack complexity (AC:L)
Exploitation conditions are straightforward and stable.
Attack requirements (AT:P)
Additional preconditions must be present for exploitation.
Privileges required (PR:N)
No privileges are required.
User interaction (UI:P)
A user has to participate (for example click/open/approve).
Vulnerable system confidentiality impact (VC:N)
No confidentiality impact on the vulnerable system.
Vulnerable system integrity impact (VI:L)
Limited integrity impact on the vulnerable system.
Vulnerable system availability impact (VA:N)
No availability impact on the vulnerable system.
Subsequent system confidentiality impact (SC:N)
No confidentiality impact on subsequent systems.
Subsequent system integrity impact (SI:N)
No integrity impact on subsequent systems.
Subsequent system availability impact (SA:N)
No availability impact on subsequent systems.
Exploit maturity (threat) (E:X)
Not defined: no reliable threat intelligence; scoring assumes the worst case (equivalent to Attacked).
Confidentiality requirement (CR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Integrity requirement (IR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Availability requirement (AR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Modified attack vector (MAV:X)
Not defined: scoring uses the Base Attack Vector (AV).
Modified attack complexity (MAC:X)
Not defined: scoring uses the Base Attack Complexity (AC).
Modified attack requirements (MAT:X)
Not defined: scoring uses the Base Attack Requirements (AT).
Modified privileges required (MPR:X)
Not defined: scoring uses the Base Privileges Required (PR).
Modified user interaction (MUI:X)
Not defined: scoring uses the Base User Interaction (UI).
Modified vulnerable system confidentiality impact (MVC:X)
Not defined: scoring uses the Base VC metric.
Modified vulnerable system integrity impact (MVI:X)
Not defined: scoring uses the Base VI metric.
Modified vulnerable system availability impact (MVA:X)
Not defined: scoring uses the Base VA metric.
Modified subsequent system confidentiality impact (MSC:X)
Not defined: scoring uses the Base SC metric.
Modified subsequent system integrity impact (MSI:X)
Not defined: scoring uses the Base SI metric.
Modified subsequent system availability impact (MSA:X)
Not defined: scoring uses the Base SA metric.
Safety (supplemental) (S:X)
Not evaluated.
Automatable (supplemental) (AU:X)
Not evaluated.
Recovery (supplemental) (R:X)
Not evaluated.
Value density (supplemental) (V:X)
Not evaluated.
Vulnerability response effort (supplemental) (RE:X)
Not evaluated.
Provider urgency (supplemental) (U:X)
Not evaluated.
 — — [email protected]
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 1.4 [email protected]

Weakness enumeration for CVE-2024-48866

Affected software / configurations for CVE-2024-48866

Vendor Product Version Raw CPE
qnap qts 5.1.0.2348 cpe:2.3:o:qnap:qts:5.1.0.2348:build_20230325:*:*:*:*:*:*
qnap qts 5.1.0.2399 cpe:2.3:o:qnap:qts:5.1.0.2399:build_20230515:*:*:*:*:*:*
qnap qts 5.1.0.2418 cpe:2.3:o:qnap:qts:5.1.0.2418:build_20230603:*:*:*:*:*:*
qnap qts 5.1.0.2444 cpe:2.3:o:qnap:qts:5.1.0.2444:build_20230629:*:*:*:*:*:*
qnap qts 5.1.0.2466 cpe:2.3:o:qnap:qts:5.1.0.2466:build_20230721:*:*:*:*:*:*
qnap qts 5.1.1.2491 cpe:2.3:o:qnap:qts:5.1.1.2491:build_20230815:*:*:*:*:*:*
qnap qts 5.1.2.2533 cpe:2.3:o:qnap:qts:5.1.2.2533:build_20230926:*:*:*:*:*:*
qnap qts 5.1.3.2578 cpe:2.3:o:qnap:qts:5.1.3.2578:build_20231110:*:*:*:*:*:*
qnap qts 5.1.4.2596 cpe:2.3:o:qnap:qts:5.1.4.2596:build_20231128:*:*:*:*:*:*
qnap qts 5.1.5.2645 cpe:2.3:o:qnap:qts:5.1.5.2645:build_20240116:*:*:*:*:*:*
qnap qts 5.1.5.2679 cpe:2.3:o:qnap:qts:5.1.5.2679:build_20240219:*:*:*:*:*:*
qnap qts 5.1.6.2722 cpe:2.3:o:qnap:qts:5.1.6.2722:build_20240402:*:*:*:*:*:*
qnap qts 5.1.7.2770 cpe:2.3:o:qnap:qts:5.1.7.2770:build_20240520:*:*:*:*:*:*
qnap qts 5.1.8.2823 cpe:2.3:o:qnap:qts:5.1.8.2823:build_20240712:*:*:*:*:*:*
qnap qts 5.2.0.2737 cpe:2.3:o:qnap:qts:5.2.0.2737:build_20240417:*:*:*:*:*:*
qnap qts 5.2.0.2744 cpe:2.3:o:qnap:qts:5.2.0.2744:build_20240424:*:*:*:*:*:*
qnap qts 5.2.0.2782 cpe:2.3:o:qnap:qts:5.2.0.2782:build_20240601:*:*:*:*:*:*
qnap qts 5.2.0.2802 cpe:2.3:o:qnap:qts:5.2.0.2802:build_20240620:*:*:*:*:*:*
qnap qts 5.2.0.2823 cpe:2.3:o:qnap:qts:5.2.0.2823:build_20240711:*:*:*:*:*:*
qnap qts 5.2.0.2851 cpe:2.3:o:qnap:qts:5.2.0.2851:build_20240808:*:*:*:*:*:*
qnap qts 5.2.0.2860 cpe:2.3:o:qnap:qts:5.2.0.2860:build_20240817:*:*:*:*:*:*
qnap qts 5.2.1.2930 cpe:2.3:o:qnap:qts:5.2.1.2930:build_20241025:*:*:*:*:*:*
qnap quts_hero h5.1.0.2409 cpe:2.3:o:qnap:quts_hero:h5.1.0.2409:build_20230525:*:*:*:*:*:*
qnap quts_hero h5.1.0.2424 cpe:2.3:o:qnap:quts_hero:h5.1.0.2424:build_20230609:*:*:*:*:*:*
qnap quts_hero h5.1.0.2453 cpe:2.3:o:qnap:quts_hero:h5.1.0.2453:build_20230708:*:*:*:*:*:*
qnap quts_hero h5.1.0.2466 cpe:2.3:o:qnap:quts_hero:h5.1.0.2466:build_20230721:*:*:*:*:*:*
qnap quts_hero h5.1.1.2488 cpe:2.3:o:qnap:quts_hero:h5.1.1.2488:build_20230812:*:*:*:*:*:*
qnap quts_hero h5.1.2.2534 cpe:2.3:o:qnap:quts_hero:h5.1.2.2534:build_20230927:*:*:*:*:*:*
qnap quts_hero h5.1.3.2578 cpe:2.3:o:qnap:quts_hero:h5.1.3.2578:build_20231110:*:*:*:*:*:*
qnap quts_hero h5.1.4.2596 cpe:2.3:o:qnap:quts_hero:h5.1.4.2596:build_20231128:*:*:*:*:*:*
qnap quts_hero h5.1.5.2647 cpe:2.3:o:qnap:quts_hero:h5.1.5.2647:build_20240118:*:*:*:*:*:*
qnap quts_hero h5.1.5.2680 cpe:2.3:o:qnap:quts_hero:h5.1.5.2680:build_20240220:*:*:*:*:*:*
qnap quts_hero h5.1.6.2734 cpe:2.3:o:qnap:quts_hero:h5.1.6.2734:build_20240414:*:*:*:*:*:*
qnap quts_hero h5.1.7.2770 cpe:2.3:o:qnap:quts_hero:h5.1.7.2770:build_20240520:*:*:*:*:*:*
qnap quts_hero h5.1.7.2788 cpe:2.3:o:qnap:quts_hero:h5.1.7.2788:build_20240607:*:*:*:*:*:*
qnap quts_hero h5.1.7.2794 cpe:2.3:o:qnap:quts_hero:h5.1.7.2794:build_20240613:*:*:*:*:*:*
qnap quts_hero h5.1.8.2823 cpe:2.3:o:qnap:quts_hero:h5.1.8.2823:build_20240712:*:*:*:*:*:*
qnap quts_hero h5.2.0.2737 cpe:2.3:o:qnap:quts_hero:h5.2.0.2737:build_20240417:*:*:*:*:*:*
qnap quts_hero h5.2.0.2782 cpe:2.3:o:qnap:quts_hero:h5.2.0.2782:build_20240601:*:*:*:*:*:*
qnap quts_hero h5.2.0.2789 cpe:2.3:o:qnap:quts_hero:h5.2.0.2789:build_20240607:*:*:*:*:*:*
qnap quts_hero h5.2.0.2802 cpe:2.3:o:qnap:quts_hero:h5.2.0.2802:build_20240620:*:*:*:*:*:*
qnap quts_hero h5.2.0.2823 cpe:2.3:o:qnap:quts_hero:h5.2.0.2823:build_20240711:*:*:*:*:*:*
qnap quts_hero h5.2.0.2851 cpe:2.3:o:qnap:quts_hero:h5.2.0.2851:build_20240808:*:*:*:*:*:*
qnap quts_hero h5.2.0.2860 cpe:2.3:o:qnap:quts_hero:h5.2.0.2860:build_20240817:*:*:*:*:*:*
qnap quts_hero h5.2.1.2929 cpe:2.3:o:qnap:quts_hero:h5.2.1.2929:build_20241025:*:*:*:*:*:*
qnap quts_hero h5.2.1.2940 cpe:2.3:o:qnap:quts_hero:h5.2.1.2940:build_20241105:*:*:*:*:*:*

References for CVE-2024-48866

cvelogic Threat Intelligence