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CVE-2023-41277

21
FAUCET Score

CVE-2023-41277 is a buffer overflow vulnerability affecting QNAP QTS, QuTS hero, and QuTScloud operating systems. This flaw allows authenticated administrators to execute arbitrary code remotely over a network. With a CVSS score of 7.2 (High), it presents a significant risk due to its low attack complexity and high impact on confidentiality, integrity, and availability. While no public exploits, Metasploit modules, or Nuclei templates are currently available, and there is minimal community discussion, affected organizations should prioritize patching to QTS 5.1.2.2533, QuTS hero h5.1.2.2534, or QuTScloud c5.1.5.2651 and later versions.

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: 3.1

5.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.3
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.55%
Probability of exploitation in next 30 days
EPSS Percentile
42.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0055 is in the 20th percentile among its peer group of 5,537 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 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-23-38
Vendor Advisory