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CVE-2024-48859

26
FAUCET Score

CVE-2024-48859 is a critical improper authentication vulnerability affecting multiple QNAP QTS and QuTS hero operating system versions. With a CVSS score of 9.1, this vulnerability allows unauthenticated remote attackers to compromise system security, leading to high confidentiality and integrity impacts. While no public exploit code or active exploitation has been observed, and community discussion is minimal, immediate patching to the specified fixed versions is strongly recommended to mitigate this severe risk.

Impacted Technologies

VendorProductVersion(s)CPE
5.1.0.2348CPE matchmatch criteria
cpe:2.3:o:qnap:qts:5.1.0.2348:build_20230325:*:*:*:*:*:*
5.1.0.2399CPE matchmatch criteria
cpe:2.3:o:qnap:qts:5.1.0.2399:build_20230515:*:*:*:*:*:*
5.1.0.2418CPE matchmatch criteria
cpe:2.3:o:qnap:qts:5.1.0.2418:build_20230603:*:*:*:*:*:*
5.1.0.2444CPE matchmatch criteria
cpe:2.3:o:qnap:qts:5.1.0.2444:build_20230629:*:*:*:*:*:*
5.1.0.2466CPE matchmatch criteria
cpe:2.3:o:qnap:qts:5.1.0.2466:build_20230721:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

5.3MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/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

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
VS Confidentiality
LOW
VS Integrity
LOW
VS Availability
NONE
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.60%
Probability of exploitation in next 30 days
EPSS Percentile
45.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0060 is in the 25th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

qnap.com / en/security-advisory/qsa-24-49
Vendor Advisory