CVE-2024-53691 | QTS, QuTS hero

A link following 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 traverse the file system to unintended locations. We have already fixed the vulnerability in the following versions: QTS 5.1.8.2823 build 20240712 and later QTS 5.2.0.2802 build 20240620 and later QuTS hero h5.1.8.2823 build 20240712 and later QuTS hero h5.2.0.2802 build 20240620 and later

Published: 2024-12-06 Last update: 2025-09-23 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2024-53691 is rated High Risk (68.1/100): CVSS High severity, with high exploitation likelihood (EPSS 48.05%, 98th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

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-2024-53691

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 2026-04-22 48.94% 48.05% -0.89%
2 2026-02-07 49.53% 48.94% -0.59%
3 2026-01-25 — 49.53% —

Full EPSS history (24 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-53691

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.7 4.0 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/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:N)
No additional preconditions are required beyond normal reachability.
Privileges required (PR:L)
Low privileges are required.
User interaction (UI:N)
No user interaction is required.
Vulnerable system confidentiality impact (VC:H)
High confidentiality impact on the vulnerable system.
Vulnerable system integrity impact (VI:H)
High integrity impact on the vulnerable system.
Vulnerable system availability impact (VA:H)
High 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]
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H 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:L)
A normal user session is enough; they don’t have to be admin.
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:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]

Weakness enumeration for CVE-2024-53691

Affected software / configurations for CVE-2024-53691

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 5.2.0.2737 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 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 h5.2.0.2737 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:*:*:*:*:*:*

References for CVE-2024-53691

cvelogic Threat Intelligence